diff --git a/apps/sequencers/midibox_seq_v4/Makefile b/apps/sequencers/midibox_seq_v4/Makefile
index dbb9de401..09e727bb7 100644
--- a/apps/sequencers/midibox_seq_v4/Makefile
+++ b/apps/sequencers/midibox_seq_v4/Makefile
@@ -15,7 +15,7 @@ LCD       =     $(MIOS32_LCD)
 ################################################################################
 
 ####################################
-# RIO: Added PROTEUS files
+# RIO: Added NEW files
 ####################################
 
 THUMB_SOURCE    = core/app.c \
@@ -85,6 +85,7 @@ THUMB_SOURCE    = core/app.c \
 		core/seq_blm.c \
 		core/seq_cc.c  \
 		core/seq_cc_labels.c  \
+		core/seq_pp_labels.c  \
 		core/seq_core.c \
 		core/seq_scale.c \
 		core/seq_groove.c \
diff --git a/apps/sequencers/midibox_seq_v4/core/seq_core.c b/apps/sequencers/midibox_seq_v4/core/seq_core.c
index 71e88a7f4..f684353d5 100644
--- a/apps/sequencers/midibox_seq_v4/core/seq_core.c
+++ b/apps/sequencers/midibox_seq_v4/core/seq_core.c
@@ -2318,7 +2318,11 @@ s32 SEQ_CORE_NotifyIncomingMIDIEvent(u8 track, mios32_midi_package_t p)
     }
   } break;
 
-  //case PolyPressure:
+  //####################################
+  //# RIO: POLYPHONIC PRESSURE
+  //####################################
+
+  case PolyPressure:
   case CC:
   case ProgramChange:
   //case Aftertouch:
@@ -2336,6 +2340,15 @@ s32 SEQ_CORE_NotifyIncomingMIDIEvent(u8 track, mios32_midi_package_t p)
 	  apply_mask = 1;
 	}
       } break;
+      case SEQ_PAR_Type_PolyPressure: {
+  if( p.event == PolyPressure && p.cc_number == tcc->lay_const[1*16 + par_layer] ) {
+    apply_mask = 1;
+  }
+      } break;
+
+  //####################################
+  //# RIO: END MODIFICATION
+  //####################################
 
       case SEQ_PAR_Type_PitchBend: {
 	if( p.event == PitchBend ) {
diff --git a/apps/sequencers/midibox_seq_v4/core/seq_layer.c b/apps/sequencers/midibox_seq_v4/core/seq_layer.c
index 720c28676..a7bc035f1 100644
--- a/apps/sequencers/midibox_seq_v4/core/seq_layer.c
+++ b/apps/sequencers/midibox_seq_v4/core/seq_layer.c
@@ -424,11 +424,35 @@ s32 SEQ_LAYER_GetEvents(u8 track, u16 step, seq_layer_evnt_t layer_events[16], u
       for(par_layer=0; par_layer<num_p_layers; ++par_layer, ++layer_type_ptr) {
 
 	switch( *layer_type_ptr ) {
+
+  //####################################
+  //# RIO: POLYPHONIC PRESSURE
+  //####################################
+
+	case SEQ_PAR_Type_PolyPressure:
 	case SEQ_PAR_Type_CC: {
 	  u8 cc_number = seq_layer_drum_cc[drum][par_layer];
 	  u8 value = SEQ_PAR_Get(track, step, par_layer, drum);
 
 	  if( !insert_empty_notes ) {
+
+      if (*layer_type_ptr == SEQ_PAR_Type_PolyPressure) {
+
+	    // new: don't send CC if assigned to invalid CC number
+	    // new: don't send if CC is assigned to LFO extra CC function in POLYPRESSURE mode
+	    if( cc_number >= 0x80 ||
+		(tcc->lfo_waveform && tcc->lfo_cc == cc_number && tcc->lfo_enable_flags.POLYPRESSURE) )
+	      break;
+
+	    // don't send CC if value hasn't changed (== invalid value)
+	    // but only if LFO not assigned to CC layer in POLYPRESSURE mode
+	    if( !tcc->lfo_enable_flags.CC  && !tcc->lfo_enable_flags.POLYPRESSURE &&
+		( value >= 0x80 || value == cc_last_value[track][drum][par_layer]) ) {
+	      break;
+	    }
+
+      } else {
+
 	    // new: don't send CC if assigned to invalid CC number
 	    // new: don't send if CC is assigned to LFO extra CC function
 	    if( cc_number >= 0x80 ||
@@ -441,6 +465,8 @@ s32 SEQ_LAYER_GetEvents(u8 track, u16 step, seq_layer_evnt_t layer_events[16], u
 		( value >= 0x80 || value == cc_last_value[track][drum][par_layer]) ) {
 	      break;
 	    }
+      }
+
 	    cc_last_value[track][drum][par_layer] = value;
 	  }
 
@@ -448,9 +474,9 @@ s32 SEQ_LAYER_GetEvents(u8 track, u16 step, seq_layer_evnt_t layer_events[16], u
 	    seq_layer_evnt_t *e = &layer_events[num_events];
 	    mios32_midi_package_t *p = &e->midi_package;
 
-	    p->type     = CC;
+	    p->type     = *layer_type_ptr == SEQ_PAR_Type_PolyPressure ? PolyPressure : CC;
 	    p->cable    = track;
-	    p->event    = CC;
+	    p->event    = *layer_type_ptr == SEQ_PAR_Type_PolyPressure ? PolyPressure : CC;
 	    p->chn      = tcc->midi_chn;
 	    p->cc_number = cc_number;
 	    p->value    = value;
@@ -458,6 +484,10 @@ s32 SEQ_LAYER_GetEvents(u8 track, u16 step, seq_layer_evnt_t layer_events[16], u
 	    e->layer_tag = drum;
 	    ++num_events;
 
+  //####################################
+  //# RIO: END MODIFICATION
+  //####################################
+
 	    // morph it
 	    if( !insert_empty_notes && tcc->morph_mode )
 	      SEQ_MORPH_EventCC(track, step, e, drum, par_layer);
@@ -757,6 +787,11 @@ s32 SEQ_LAYER_GetEvents(u8 track, u16 step, seq_layer_evnt_t layer_events[16], u
 
 	} break;
 
+  //####################################
+  //# RIO: POLYPHONIC PRESSURE
+  //####################################
+
+        case SEQ_PAR_Type_PolyPressure:
         case SEQ_PAR_Type_CC: {
 	  seq_layer_evnt_t *e = &layer_events[num_events];
 	  mios32_midi_package_t *p = &e->midi_package;
@@ -764,6 +799,24 @@ s32 SEQ_LAYER_GetEvents(u8 track, u16 step, seq_layer_evnt_t layer_events[16], u
 	  u8 value = SEQ_PAR_Get(track, step, par_layer, instrument);
 
 	  if( !insert_empty_notes ) {
+
+      if (*layer_type_ptr == SEQ_PAR_Type_PolyPressure) {
+
+	    // new: don't send CC if assigned to invalid CC number
+	    // new: don't send if CC is assigned to LFO extra CC function in POLYPRESSURE mode
+	    if( cc_number >= 0x80 ||
+		(tcc->lfo_waveform && tcc->lfo_cc == cc_number && tcc->lfo_enable_flags.POLYPRESSURE) )
+	      break;
+
+	    // don't send CC if value hasn't changed (== invalid value)
+	    // but only if LFO not assigned to CC layer in POLYPRESSURE mode
+	    if( !tcc->lfo_enable_flags.CC && !tcc->lfo_enable_flags.POLYPRESSURE &&
+		( value >= 0x80 || value == cc_last_value[track][0][par_layer]) ) {
+	      break;
+	    }
+
+      } else {
+
 	    // new: don't send CC if assigned to invalid CC number
 	    // new: don't send if CC is assigned to LFO extra CC function
 	    if( cc_number >= 0x80 ||
@@ -776,7 +829,9 @@ s32 SEQ_LAYER_GetEvents(u8 track, u16 step, seq_layer_evnt_t layer_events[16], u
 		( value >= 0x80 || value == cc_last_value[track][0][par_layer]) ) {
 	      break;
 	    }
-	    cc_last_value[track][0][par_layer] = value;
+      }
+
+      cc_last_value[track][0][par_layer] = value;
 	  }
 
 	  if(
@@ -784,9 +839,9 @@ s32 SEQ_LAYER_GetEvents(u8 track, u16 step, seq_layer_evnt_t layer_events[16], u
 	     (tcc->event_mode != SEQ_EVENT_MODE_CC || gate) &&
 #endif
 	     (insert_empty_notes || !(layer_muted & (1 << par_layer))) ) {
-	    p->type     = CC;
+	    p->type     = *layer_type_ptr == SEQ_PAR_Type_PolyPressure ? PolyPressure : CC;
 	    p->cable    = track;
-	    p->event    = CC;
+	    p->event    = *layer_type_ptr == SEQ_PAR_Type_PolyPressure ? PolyPressure : CC;
 	    p->chn      = tcc->midi_chn;
 	    p->cc_number = cc_number;
 	    p->value    = value;
@@ -794,6 +849,10 @@ s32 SEQ_LAYER_GetEvents(u8 track, u16 step, seq_layer_evnt_t layer_events[16], u
 	    e->layer_tag = par_layer;
 	    ++num_events;
 
+  //####################################
+  //# RIO: END MODIFICATION
+  //####################################
+
 	    // morph it
 	    if( !insert_empty_notes && tcc->morph_mode )
 	      SEQ_MORPH_EventCC(track, step, e, instrument, par_layer);
@@ -1231,7 +1290,12 @@ s32 SEQ_LAYER_DirectSendEvent(u8 track, u8 par_layer)
   p.cable    = track;
   p.chn      = tcc->midi_chn;
 
+  //####################################
+  //# RIO: POLYPHONIC PRESSURE
+  //####################################
+
   switch( layer_type ) {
+  case SEQ_PAR_Type_PolyPressure:
   case SEQ_PAR_Type_CC: {
     u8 cc_number = tcc->lay_const[1*16 + par_layer];
     u8 value = (cc_last_value[track][0][par_layer] < 0x80) ? cc_last_value[track][0][par_layer] : 0x40;
@@ -1239,12 +1303,16 @@ s32 SEQ_LAYER_DirectSendEvent(u8 track, u8 par_layer)
     if( cc_number >= 0x80 )
       return -1; // CC disabled
 
-    p.type      = CC;
-    p.event     = CC;
+    p.type      = layer_type == SEQ_PAR_Type_PolyPressure ? PolyPressure : CC;
+    p.event     = layer_type == SEQ_PAR_Type_PolyPressure ? PolyPressure : CC;
     p.cc_number = tcc->lay_const[1*16 + par_layer];
     p.value     = value;
   } break;
 
+  //####################################
+  //# RIO: END MODIFICATION
+  //####################################
+
   case SEQ_PAR_Type_PitchBend: {
     u8 value = (pb_last_value[track] < 0x80) ? pb_last_value[track] : 0x40;
 
diff --git a/apps/sequencers/midibox_seq_v4/core/seq_lcd.c b/apps/sequencers/midibox_seq_v4/core/seq_lcd.c
index 6f62ff942..9c69770f2 100644
--- a/apps/sequencers/midibox_seq_v4/core/seq_lcd.c
+++ b/apps/sequencers/midibox_seq_v4/core/seq_lcd.c
@@ -816,6 +816,13 @@ s32 SEQ_LCD_PrintLayerValue(u8 track, u8 par_layer, u8 par_value)
     SEQ_LCD_PrintGatelength(par_value);
     break;
 
+  //####################################
+  //# RIO: POLYPHONIC PRESSURE
+  //####################################
+  case SEQ_PAR_Type_PolyPressure:
+  //####################################
+  //# RIO: END MODIFICATION
+  //####################################
   case SEQ_PAR_Type_CC:
   case SEQ_PAR_Type_ProgramChange:
   case SEQ_PAR_Type_PitchBend:
@@ -1007,6 +1014,13 @@ s32 SEQ_LCD_PrintLayerEvent(u8 track, u8 step, u8 par_layer, u8 instrument, u8 s
     SEQ_LCD_PrintGatelength(layer_event.len);
     break;
 
+  //####################################
+  //# RIO: POLYPHONIC PRESSURE
+  //####################################
+  case SEQ_PAR_Type_PolyPressure:
+  //####################################
+  //# RIO: END MODIFICATION
+  //####################################
   case SEQ_PAR_Type_CC:
   case SEQ_PAR_Type_ProgramChange:
   case SEQ_PAR_Type_PitchBend:
diff --git a/apps/sequencers/midibox_seq_v4/core/seq_lfo.c b/apps/sequencers/midibox_seq_v4/core/seq_lfo.c
index 03e2b48e0..338135175 100644
--- a/apps/sequencers/midibox_seq_v4/core/seq_lfo.c
+++ b/apps/sequencers/midibox_seq_v4/core/seq_lfo.c
@@ -262,12 +262,18 @@ s32 SEQ_LFO_FastCC_Event(u8 track, u32 bpm_tick, mios32_midi_package_t *p, u8 ig
   else if( lfo_value > 127 )
     lfo_value = 127;
 
-  p->type      = CC;
+  //####################################
+  //# RIO: POLYPHONIC PRESSURE
+  //####################################
+  p->type      = (tcc->lfo_enable_flags.POLYPRESSURE) ? PolyPressure : CC;
   p->cable     = track;
-  p->event     = CC;
+  p->event     = (tcc->lfo_enable_flags.POLYPRESSURE) ? PolyPressure : CC;
   p->chn       = tcc->midi_chn;
   p->cc_number = tcc->lfo_cc;
   p->value     = lfo_value;
+  //####################################
+  //# RIO: END MODIFICATION
+  //####################################
 
   return 1; // returned 1 event
 }
diff --git a/apps/sequencers/midibox_seq_v4/core/seq_lfo.h b/apps/sequencers/midibox_seq_v4/core/seq_lfo.h
index b6ffd23df..fcf211855 100644
--- a/apps/sequencers/midibox_seq_v4/core/seq_lfo.h
+++ b/apps/sequencers/midibox_seq_v4/core/seq_lfo.h
@@ -177,8 +177,9 @@ typedef union {
     u8 VELOCITY:1;
     u8 LENGTH:1;
     u8 CC:1;
-    u8 REVERSE:1;   // RIO: added Reverse
-    u8 FADEUP:1;    // RIO: added Fade OUT
+    u8 REVERSE:1;       // RIO: added Reverse
+    u8 FADEUP:1;        // RIO: added Fade OUT
+    u8 POLYPRESSURE:1;  // RIO: added PolyPressure
   };
 } seq_lfo_enable_flags_t;
 
diff --git a/apps/sequencers/midibox_seq_v4/core/seq_par.c b/apps/sequencers/midibox_seq_v4/core/seq_par.c
index e9c03f67b..ac4665973 100644
--- a/apps/sequencers/midibox_seq_v4/core/seq_par.c
+++ b/apps/sequencers/midibox_seq_v4/core/seq_par.c
@@ -63,9 +63,9 @@ static const char seq_par_type_names[SEQ_PAR_NUM_TYPES][6] = {
   "Root ", // 16
   "Scale", // 17
   "Chrd3", // 18
-//####################################
-//# RIO: MUTES LAYER
-//####################################
+//########################################
+//# RIO: MUTES LAYER / POLYPHONIC PRESSURE
+//########################################
   "Mute1", // 19
   "Mute2", // 20
   "Mute3", // 21
@@ -82,9 +82,10 @@ static const char seq_par_type_names[SEQ_PAR_NUM_TYPES][6] = {
   "Mut14", // 32
   "Mut15", // 33
   "Mut16", // 34
-//####################################
+  " PP  ", // 35
+//########################################
 //# RIO: END MODIFICATION
-//####################################
+//########################################
 };
 
 static const u8 seq_par_map[SEQ_PAR_NUM_TYPES] = { // allows to change the order for the UI selection
@@ -96,6 +97,13 @@ static const u8 seq_par_map[SEQ_PAR_NUM_TYPES] = { // allows to change the order
   SEQ_PAR_Type_Velocity,
   SEQ_PAR_Type_Length,
   SEQ_PAR_Type_CC,
+//####################################
+//# RIO: POLYPHONIC PRESSURE
+//####################################
+  SEQ_PAR_Type_PolyPressure,
+//####################################
+//# RIO: END MODIFICATION
+//####################################
   SEQ_PAR_Type_PitchBend,
   SEQ_PAR_Type_Aftertouch,
   SEQ_PAR_Type_ProgramChange,
@@ -151,9 +159,9 @@ static const u8 seq_par_default_value[SEQ_PAR_NUM_TYPES] = {
   0,    // Root: C
   0,    // Scale: 0
   0x01, // Chord3: 1
-//####################################
-//# RIO: MUTES LAYER
-//####################################
+//########################################
+//# RIO: MUTES LAYER / POLYPHONIC PRESSURE
+//########################################
   0,    // Mute1: 0
   0,    // Mute2: 0
   0,    // Mute3: 0
@@ -170,9 +178,10 @@ static const u8 seq_par_default_value[SEQ_PAR_NUM_TYPES] = {
   0,    // Mute14: 0
   0,    // Mute15: 0
   0,    // Mute16: 0
-//####################################
+  0x80, // PolyPressure
+//########################################
 //# RIO: END MODIFICATION
-//####################################
+//########################################
 };
 
 static const u8 seq_par_max_value[SEQ_PAR_NUM_TYPES] = {
@@ -195,9 +204,9 @@ static const u8 seq_par_max_value[SEQ_PAR_NUM_TYPES] = {
   0x7f, // Root
   0x7f, // Scale
   0x7f, // Chord3
-//####################################
-//# RIO: MUTES LAYER
-//####################################
+//########################################
+//# RIO: MUTES LAYER / POLYPHONIC PRESSURE
+//########################################
   2,    // Mute1
   2,    // Mute2
   2,    // Mute3
@@ -214,9 +223,10 @@ static const u8 seq_par_max_value[SEQ_PAR_NUM_TYPES] = {
   2,    // Mute14
   2,    // Mute15
   2,    // Mute16
-//####################################
+  0x80, // PolyPressure
+//########################################
 //# RIO: END MODIFICATION
-//####################################
+//########################################
 };
 
 
diff --git a/apps/sequencers/midibox_seq_v4/core/seq_par.h b/apps/sequencers/midibox_seq_v4/core/seq_par.h
index 41b690ae9..3cbbaa8e6 100644
--- a/apps/sequencers/midibox_seq_v4/core/seq_par.h
+++ b/apps/sequencers/midibox_seq_v4/core/seq_par.h
@@ -53,9 +53,9 @@ typedef enum {
   SEQ_PAR_Type_Root=16,
   SEQ_PAR_Type_Scale=17,
   SEQ_PAR_Type_Chord3=18,
-//####################################
-//# RIO: MUTES LAYER
-//####################################
+//########################################
+//# RIO: MUTES LAYER / POLYPHONIC PRESSURE
+//########################################
   SEQ_PAR_Type_Mute1=19,
   SEQ_PAR_Type_Mute2=20,
   SEQ_PAR_Type_Mute3=21,
@@ -72,12 +72,13 @@ typedef enum {
   SEQ_PAR_Type_Mute14=32,
   SEQ_PAR_Type_Mute15=33,
   SEQ_PAR_Type_Mute16=34,
+  SEQ_PAR_Type_PolyPressure=35,
 } seq_par_layer_type_t;
 
-#define SEQ_PAR_NUM_TYPES 35
-//####################################
+#define SEQ_PAR_NUM_TYPES 36
+//########################################
 //# RIO: END MODIFICATION
-//####################################
+//########################################
 
 // NOTE: numbers have to be aligned with the strings in SEQ_LCD_PrintNthMode!
 #define SEQ_PAR_TYPE_NTH_OFF    0
diff --git a/apps/sequencers/midibox_seq_v4/core/seq_pp_labels.c b/apps/sequencers/midibox_seq_v4/core/seq_pp_labels.c
new file mode 100644
index 000000000..ed3c0ab1a
--- /dev/null
+++ b/apps/sequencers/midibox_seq_v4/core/seq_pp_labels.c
@@ -0,0 +1,195 @@
+// $Id$
+/*
+ * PP Label array
+ *
+ * ==========================================================================
+ *
+ *  Access Virus Page B - PolyPressure Assignments
+ *  Licensed for personal non-commercial use only.
+ *  All other rights reserved.
+ * 
+ * ==========================================================================
+ */
+
+/////////////////////////////////////////////////////////////////////////////
+// Include files
+/////////////////////////////////////////////////////////////////////////////
+
+#include <mios32.h>
+
+#include "seq_pp_labels.h"
+
+
+/////////////////////////////////////////////////////////////////////////////
+// Local variables
+/////////////////////////////////////////////////////////////////////////////
+
+static const char pp_labels[128][9] = {
+  // 0x00..0x0f
+  "        ",
+  "Arp Mode",
+  "Arp PSel",
+  "Arp Oct ",
+  "Arp Hold",
+  "Arp NLen",
+  "Arp Swng",
+  "LF3 Rate",
+  "LF3 Shpe",
+  "LF3 Mode",
+  "LF3 KeyF",
+  "LF3 Dest",
+  "LF3 Amnt",
+  "LF3 Fade",
+  "        ",
+  "        ",
+  
+  // 0x10..0x1f
+  "Clk Tmpo",
+  "Arp Clk ",
+  "LF1 Clk ",
+  "LF2 Clk ",
+  "Dly Clk ",
+  "LF3 Clk ",
+  "        ",
+  "        ",
+  "        ",
+  "Ctr Smoo",
+  "Bnd Up  ",
+  "Bnd Down",
+  "Bnd Scle",
+  "        ",
+  "FL1 EPol",
+  "FL2 EPol",
+  
+  // 0x20..0x2f
+  "FL2 Link",
+  "FLt Base",
+  "OSC FM M",
+  "OSC Phas",
+  "PunchInt",
+  "        ",
+  "InFollow",
+  "Voc Mode",
+  "        ",
+  "OS3 Mode",
+  "OS3 Vol ",
+  "OS3 Semi",
+  "OS3 Detu",
+  "        ",
+  "        ",
+  "OS1 SVel",
+  
+  // 0x30..0x3f
+  "OS2 SVel",
+  "PW  Velo",
+  "FM  AVel",
+  "        ",
+  "        ",
+  "        ",
+  "FL1 EAVe",
+  "FL2 EAVe",
+  "RE1 Velo",
+  "RE2 Velo",
+  "Out2 Bal",
+  "        ",
+  "Amp Velo",
+  "Pan Velo",
+  "Def1 Sng",
+  "Def2 Sng",
+  
+  // 0x40..0x4f
+  "As1 Src ",
+  "As1 Dest",
+  "As1 Amt ",
+  "As2 Src ",
+  "As2 Des1",
+  "As2 Amt1",
+  "As2 Des2",
+  "As2 Amt2",
+  "As3 Src ",
+  "As3 Des1",
+  "As3 Amt1",
+  "As3 Des2",
+  "As3 Amt2",
+  "As3 Des3",
+  "As3 Amt3",
+  "LF1 AsDs",
+
+  // 0x50..0x5f
+  "LF1 AsAm",
+  "LF2 AsDs",
+  "LF2 AsAm",
+  "        ",
+  "Phs Mode",
+  "Phs Mix ",
+  "Phs Rate",
+  "Phs Deph",
+  "Phs Freq",
+  "Phs Feed",
+  "Phs Sprd",
+  "        ",
+  "        ",
+  "        ",
+  "        ",
+  "        ",
+  
+  // 0x60..0x6f
+  "        ",
+  "BassInt ",
+  "BassTune",
+  "InRingMo",
+  "DistCurv",
+  "DistInt ",
+  "        ",
+  "        ",
+  "        ",
+  "        ",
+  "        ",
+  "        ",
+  "        ",
+  "        ",
+  "        ",
+  "        ",
+  
+  // 0x70..0x7f
+  "SNameCh1",
+  "SNameCh2",
+  "SNameCh3",
+  "SNameCh4",
+  "SNameCh5",
+  "SNameCh6",
+  "SNameCh7",
+  "SNameCh8",
+  "SNameCh9",
+  "SNameC10",
+  "FLT Sel ",
+  "Categor1",
+  "Categor2",
+  "        ",
+  "        ",
+  "        ",
+};
+
+
+
+/////////////////////////////////////////////////////////////////////////////
+// Initialisation
+/////////////////////////////////////////////////////////////////////////////
+s32 SEQ_PP_LABELS_Init(u32 mode)
+{
+  // here we could also generate the labels in RAM...
+
+  return 0; // no error
+}
+
+
+/////////////////////////////////////////////////////////////////////////////
+// Returns PP label
+/////////////////////////////////////////////////////////////////////////////
+const char *SEQ_PP_LABELS_Get(u8 pp)
+{
+  if( pp >= 128 )
+    pp = 0; // just to avoid buffer overruns if invalid PP number selected
+
+  return pp_labels[pp];
+}
diff --git a/apps/sequencers/midibox_seq_v4/core/seq_pp_labels.h b/apps/sequencers/midibox_seq_v4/core/seq_pp_labels.h
new file mode 100644
index 000000000..24eed3e5c
--- /dev/null
+++ b/apps/sequencers/midibox_seq_v4/core/seq_pp_labels.h
@@ -0,0 +1,42 @@
+// $Id$
+/*
+ * Header file for PP label array
+ *
+ * ==========================================================================
+ *
+ *  Copyright (C) 2008 Thorsten Klose (tk@midibox.org)
+ *  Licensed for personal non-commercial use only.
+ *  All other rights reserved.
+ * 
+ * ==========================================================================
+ */
+
+#ifndef _SEQ_PP_LABELS_H
+#define _SEQ_PP_LABELS_H
+
+
+/////////////////////////////////////////////////////////////////////////////
+// Global definitions
+/////////////////////////////////////////////////////////////////////////////
+
+#define SEQ_PP_LABELS_NUM   128 // for PP0..127
+#define SEQ_PP_LABELS_WIDTH   9 // 8 characters + \0 terminator
+
+
+/////////////////////////////////////////////////////////////////////////////
+// Global Types
+/////////////////////////////////////////////////////////////////////////////
+
+
+/////////////////////////////////////////////////////////////////////////////
+// Prototypes
+/////////////////////////////////////////////////////////////////////////////
+
+extern s32 SEQ_PP_LABELS_Init(u32 mode);
+extern const char *SEQ_PP_LABELS_Get(u8 pp);
+
+/////////////////////////////////////////////////////////////////////////////
+// Export global variables
+/////////////////////////////////////////////////////////////////////////////
+
+#endif /* _SEQ_PP_LABELS_H */
diff --git a/apps/sequencers/midibox_seq_v4/core/seq_ui.c b/apps/sequencers/midibox_seq_v4/core/seq_ui.c
index 1909218c6..c2b22b8e6 100644
--- a/apps/sequencers/midibox_seq_v4/core/seq_ui.c
+++ b/apps/sequencers/midibox_seq_v4/core/seq_ui.c
@@ -268,6 +268,13 @@ s32 SEQ_UI_InitEncSpeed(u32 auto_config)
     switch( SEQ_PAR_AssignmentGet(SEQ_UI_VisibleTrackGet(), ui_selected_par_layer) ) {
       case SEQ_PAR_Type_Velocity:
       case SEQ_PAR_Type_Length:
+      //####################################
+      //# RIO: POLYPHONIC PRESSURE
+      //####################################
+      case SEQ_PAR_Type_PolyPressure:
+      //####################################
+      //# RIO: END MODIFICATION
+      //####################################
       case SEQ_PAR_Type_CC:
       case SEQ_PAR_Type_PitchBend:
       case SEQ_PAR_Type_Probability:
@@ -666,8 +673,9 @@ static s32 SEQ_UI_Button_Pause(s32 depressed)
 
 s32 SEQ_UI_Button_Play(s32 depressed)
 {
+
   //###################################################
-  //# RIO: START PLAYBACK ONCE - fixed bouncing button
+  //# RIO: Start playback once - fixed bouncing button
   //###################################################
 
   if( depressed || SEQ_BPM_IsRunning() ) return -1; // ignore when button depressed
diff --git a/apps/sequencers/midibox_seq_v4/core/seq_ui_edit.c b/apps/sequencers/midibox_seq_v4/core/seq_ui_edit.c
index 9a67efb73..d821f07d4 100644
--- a/apps/sequencers/midibox_seq_v4/core/seq_ui_edit.c
+++ b/apps/sequencers/midibox_seq_v4/core/seq_ui_edit.c
@@ -1073,8 +1073,10 @@ s32 SEQ_UI_EDIT_LCD_Handler(u8 high_prio, seq_ui_edit_mode_t edit_mode)
   SEQ_LCD_CursorSet(40, 0);
 
   SEQ_LCD_PrintFormattedString("Step%3d ", ui_selected_step+1);
-
-  if( layer_event.midi_package.event == CC ) {
+//####################################
+//# RIO: POLYPHONIC PRESSURE
+//####################################
+  if( layer_event.midi_package.event == CC || layer_event.midi_package.event == PolyPressure) {
     mios32_midi_port_t port = SEQ_CC_Get(visible_track, SEQ_CC_MIDI_PORT);
     u8 loopback = port == 0xf0;
 
@@ -1082,13 +1084,16 @@ s32 SEQ_UI_EDIT_LCD_Handler(u8 high_prio, seq_ui_edit_mode_t edit_mode)
       SEQ_LCD_PrintString((char *)SEQ_CC_LABELS_Get(port, layer_event.midi_package.cc_number));
     else {
       if( layer_event.midi_package.cc_number >= 0x80 ) {
-	SEQ_LCD_PrintFormattedString("  CC#off");
+	SEQ_LCD_PrintFormattedString("  %s#off", (layer_event.midi_package.event == CC) ? "CC" : "PP");
       } else {
-	SEQ_LCD_PrintFormattedString("  CC#%3d", layer_event.midi_package.cc_number);
+	SEQ_LCD_PrintFormattedString("  %s#%3d", (layer_event.midi_package.event == CC) ? "CC" : "PP", layer_event.midi_package.cc_number);
       }
     }
     SEQ_LCD_PrintFormattedString(" %3d ", layer_event.midi_package.value);
     SEQ_LCD_PrintVBar(layer_event.midi_package.value >> 4);
+//####################################
+//# RIO: END MODIFICATION
+//####################################
   } else {
     SEQ_LCD_PrintSpaces(2);
 
@@ -1481,14 +1486,20 @@ static s32 ChangeSingleEncValue(u8 track, u16 par_step, u16 trg_step, s32 increm
   if( !dont_change_gate ) {
     u8 event_mode = SEQ_CC_Get(track, SEQ_CC_MIDI_EVENT_MODE);
 
+    //####################################
+    //# RIO: POLYPHONIC PRESSURE
+    //####################################
     // we do this always regardless if value has been changed or not (e.g. increment if value already 127)
-    if( event_mode == SEQ_EVENT_MODE_CC && layer_type == SEQ_PAR_Type_CC ) {
+    if( event_mode == SEQ_EVENT_MODE_CC && (layer_type == SEQ_PAR_Type_CC || layer_type == SEQ_PAR_Type_PolyPressure) ) {
       // in this mode gates are used to disable CC
       // if a CC value has been changed, set gate
       if( !seq_ui_options.PRINT_AND_MODIFY_WITHOUT_GATES ) {
 	SEQ_TRG_GateSet(track, trg_step, ui_selected_instrument, 1);
       }
     }
+    //####################################
+    //# RIO: END MODIFICATION
+    //####################################
   }
 
   // take over if changed
diff --git a/apps/sequencers/midibox_seq_v4/core/seq_ui_fx_lfo.c b/apps/sequencers/midibox_seq_v4/core/seq_ui_fx_lfo.c
index d61e69c27..a806e8c31 100644
--- a/apps/sequencers/midibox_seq_v4/core/seq_ui_fx_lfo.c
+++ b/apps/sequencers/midibox_seq_v4/core/seq_ui_fx_lfo.c
@@ -45,7 +45,10 @@
 // Local definitions
 /////////////////////////////////////////////////////////////////////////////
 
-#define NUM_OF_ITEMS       14
+//####################################
+//# RIO: POLYPHONIC PRESSURE
+//####################################
+#define NUM_OF_ITEMS       15
 #define ITEM_GXTY          0
 #define ITEM_WAVEFORM      1
 #define ITEM_AMPLITUDE     2
@@ -59,8 +62,11 @@
 #define ITEM_ENABLE_CC     10
 #define ITEM_CC            11
 #define ITEM_CC_OFFSET     12
-#define ITEM_CC_PPQN       13
-
+#define ITEM_ENABLE_PP     13
+#define ITEM_CC_PPQN       14
+//####################################
+//# RIO: END MODIFICATION
+//####################################
 
 /////////////////////////////////////////////////////////////////////////////
 // Local variables
@@ -89,8 +95,15 @@ static s32 LED_Handler(u16 *gp_leds)
     case ITEM_ENABLE_VELOCITY: *gp_leds = 0x0200; break;
     case ITEM_ENABLE_LENGTH: *gp_leds = 0x0400; break;
     case ITEM_ENABLE_CC: *gp_leds = 0x0800; break;
-    case ITEM_CC: *gp_leds = 0x1000; break;
-    case ITEM_CC_OFFSET: *gp_leds = 0x2000; break;
+    //####################################
+    //# RIO: POLYPHONIC PRESSURE
+    //####################################
+    case ITEM_ENABLE_PP: *gp_leds = 0x1000; break;
+    //####################################
+    //# RIO: END MODIFICATION
+    //####################################
+    case ITEM_CC: *gp_leds = 0x2000; break;
+    case ITEM_CC_OFFSET: *gp_leds = 0x4000; break;
     case ITEM_CC_PPQN: *gp_leds = 0x8000; break;
   }
 
@@ -164,8 +177,15 @@ static s32 Encoder_Handler(seq_ui_encoder_t encoder, s32 incrementer)
       ui_selected_item = ITEM_ENABLE_CC;
       break;
 
+    //####################################
+    //# RIO: POLYPHONIC PRESSURE
+    //####################################
     case SEQ_UI_ENCODER_GP13:
-      return -1; // not mapped
+      ui_selected_item = ITEM_ENABLE_PP;
+      break;
+    //####################################
+    //# RIO: END MODIFICATION
+    //####################################
 
     case SEQ_UI_ENCODER_GP14:
       // CC number selection now has to be confirmed with GP button
@@ -238,11 +258,15 @@ static s32 Encoder_Handler(seq_ui_encoder_t encoder, s32 incrementer)
     case ITEM_STEPS:         return SEQ_UI_CC_Inc(SEQ_CC_LFO_STEPS, 0, 255, incrementer);
     case ITEM_STEPS_RST:     return SEQ_UI_CC_Inc(SEQ_CC_LFO_STEPS_RST, 0, 255, incrementer);
 
+    //####################################
+    //# RIO: POLYPHONIC PRESSURE
+    //####################################
     case ITEM_ENABLE_ONE_SHOT:
     case ITEM_ENABLE_NOTE:
     case ITEM_ENABLE_VELOCITY:
     case ITEM_ENABLE_LENGTH:
-    case ITEM_ENABLE_CC: {
+    case ITEM_ENABLE_CC:
+    case ITEM_ENABLE_PP: {
       u8 flag = ui_selected_item - ITEM_ENABLE_ONE_SHOT;
       u8 mask = 1 << flag;
       u8 value = SEQ_CC_Get(visible_track, SEQ_CC_LFO_ENABLE_FLAGS);
@@ -253,6 +277,9 @@ static s32 Encoder_Handler(seq_ui_encoder_t encoder, s32 incrementer)
       else
 	SEQ_UI_CC_SetFlags(SEQ_CC_LFO_ENABLE_FLAGS, mask, 0);
     } break;
+    //####################################
+    //# RIO: END MODIFICATION
+    //####################################
 
     case ITEM_CC: {
       // CC number selection now has to be confirmed with GP button
@@ -391,7 +418,7 @@ static s32 LCD_Handler(u8 high_prio)
   else if (SEQ_CC_Get(visible_track, SEQ_CC_LFO_PHASE) > 100)           sprintf(buffer2, "Dly.");
   else                                                                  sprintf(buffer2, "Phs.");
 
-  SEQ_LCD_PrintFormattedString("Trk. %s%cAmp. %s Steps Rst OneShot   Note Vel. Len.  CC   ExtraCC# Offs. PPQN",buffer1,ch,buffer2);
+  SEQ_LCD_PrintFormattedString("Trk. %s%cAmp. %s Steps Rst OneShot   Note Vel. Len.  CC   Extra%s# Offs. PPQN",buffer1,ch,buffer2, (SEQ_CC_Get(visible_track, SEQ_CC_LFO_ENABLE_FLAGS) & (1 << 7)) ? "PP" : "CC");
 
   //##############################
   //# RIO: END MODIFICATION
diff --git a/apps/sequencers/midibox_seq_v4/core/seq_ui_trkevnt.c b/apps/sequencers/midibox_seq_v4/core/seq_ui_trkevnt.c
index b27e67809..fa6086d77 100644
--- a/apps/sequencers/midibox_seq_v4/core/seq_ui_trkevnt.c
+++ b/apps/sequencers/midibox_seq_v4/core/seq_ui_trkevnt.c
@@ -29,6 +29,7 @@
 #include "seq_midi_port.h"
 #include "seq_label.h"
 #include "seq_cc_labels.h"
+#include "seq_pp_labels.h"
 #include "seq_midi_in.h"
 
 #include "file.h"
@@ -553,18 +554,25 @@ static s32 Encoder_Handler(seq_ui_encoder_t encoder, s32 incrementer)
 	      if( ui_selected_item == ITEM_LAYER_CONTROL )
 		assignment = edit_layer_type;
 
-	      if( assignment == SEQ_PAR_Type_CC ) {
+        //####################################
+        //# RIO: POLYPHONIC PRESSURE
+        //####################################
+	      if( assignment == SEQ_PAR_Type_CC || assignment == SEQ_PAR_Type_PolyPressure ) {
 		// CC number selection now has to be confirmed with GP button
 		if( incrementer ) {
 		  if( ui_selected_item != ITEM_LAYER_PAR ) {
 		    edit_cc_number = SEQ_CC_Get(visible_track, SEQ_CC_LAY_CONST_B1 + ui_selected_par_layer);
 		    ui_selected_item = ITEM_LAYER_PAR;
 		  }
-		  SEQ_UI_Msg(SEQ_UI_MSG_USER, 2000, "Please confirm CC", "with GP button!");
+          if (assignment == SEQ_PAR_Type_PolyPressure) 
+            SEQ_UI_Msg(SEQ_UI_MSG_USER, 2000, "Please confirm PP", "with GP button!");
+		  else SEQ_UI_Msg(SEQ_UI_MSG_USER, 2000, "Please confirm CC", "with GP button!");
 		} else {
 		  if( edit_cc_number != SEQ_CC_Get(visible_track, SEQ_CC_LAY_CONST_B1 + ui_selected_par_layer) ) {
 		    SEQ_CC_Set(visible_track, SEQ_CC_LAY_CONST_B1 + ui_selected_par_layer, edit_cc_number);
-		    SEQ_UI_Msg(SEQ_UI_MSG_USER, 2000, "CC number", "has been changed.");
+            if (assignment == SEQ_PAR_Type_PolyPressure) 
+    		    SEQ_UI_Msg(SEQ_UI_MSG_USER, 2000, "PP number", "has been changed.");
+            else SEQ_UI_Msg(SEQ_UI_MSG_USER, 2000, "CC number", "has been changed.");
 		  } else {
 		    // send MIDI event
 		    if( SEQ_LAYER_DirectSendEvent(visible_track, ui_selected_par_layer) >= 0 ) {
@@ -572,6 +580,9 @@ static s32 Encoder_Handler(seq_ui_encoder_t encoder, s32 incrementer)
 		    }
 		  }
 		}
+        //####################################
+        //# RIO: END MODIFICATION
+        //####################################
 	      } else {
 		return -1; // ignore
 	      }
@@ -1369,24 +1380,31 @@ static s32 LCD_Handler(u8 high_prio)
 	  if( ui_selected_item == ITEM_LAYER_CONTROL )
 	    assignment = edit_layer_type;
 
+    //####################################
+    //# RIO: POLYPHONIC PRESSURE
+    //####################################
 	  switch( assignment ) {
+            case SEQ_PAR_Type_PolyPressure:
             case SEQ_PAR_Type_CC: {
 	      mios32_midi_port_t port = SEQ_CC_Get(visible_track, SEQ_CC_MIDI_PORT);
 	      u8 current_value = SEQ_CC_Get(visible_track, SEQ_CC_LAY_CONST_B1 + ui_selected_par_layer);
 	      u8 edit_value = ui_selected_item == ITEM_LAYER_PAR ? edit_cc_number : current_value;
 
 	      if( edit_value >= 0x80 ) {
-		SEQ_LCD_PrintFormattedString("off%c(no CC   ) ", (current_value != edit_value) ? '!' : ' ');
+        SEQ_LCD_PrintFormattedString("off%c(no %s   ) ", (current_value != edit_value) ? '!' : ' ', (assignment == SEQ_PAR_Type_PolyPressure) ? "PP" : "CC");
 	      } else {
 		SEQ_LCD_PrintFormattedString("%03d%c(%s) ", edit_value,
 					     (current_value != edit_value) ? '!' : ' ',
-					     SEQ_CC_LABELS_Get(port, edit_value));
+					     (assignment == SEQ_PAR_Type_PolyPressure) ? SEQ_PP_LABELS_Get(edit_value) : SEQ_CC_LABELS_Get(port, edit_value));
 	      }
 	    } break;
 
             default:
 	      SEQ_LCD_PrintSpaces(15);
 	  }
+    //####################################
+    //# RIO: END MODIFICATION
+    //####################################
 	}
 
 	SEQ_LCD_PrintString("PRESETS  INIT");