diff --git a/cmProc4.c b/cmProc4.c
index 6de6ad6..e27dbf0 100644
--- a/cmProc4.c
+++ b/cmProc4.c
@@ -1275,7 +1275,7 @@ cmRC_t cmScMatcherReset( cmScMatcher* p, unsigned scLocIdx )
   return cmOkRC;
 }
 
-bool cmScMatcherInputMidi(  cmScMatcher* p, unsigned smpIdx, unsigned status, cmMidiByte_t d0, cmMidiByte_t d1 )
+bool cmScMatcherInputMidi(  cmScMatcher* p, unsigned smpIdx, unsigned muid, unsigned status, cmMidiByte_t d0, cmMidiByte_t d1 )
 {
   if( (status&0xf0) != kNoteOnMdId)
     return false;
@@ -1293,6 +1293,7 @@ bool cmScMatcherInputMidi(  cmScMatcher* p, unsigned smpIdx, unsigned status, cm
   p->midiBuf[mi].scEvtIdx = cmInvalidIdx;
   p->midiBuf[mi].mni      = p->mni++;
   p->midiBuf[mi].smpIdx   = smpIdx;
+  p->midiBuf[mi].muid     = muid;
   p->midiBuf[mi].pitch    = d0;
   p->midiBuf[mi].vel      = d1;
   if( p->mbi > 0 )
@@ -1503,7 +1504,7 @@ cmRC_t     cmScMatcherStep(  cmScMatcher* p )
   return cmOkRC;
 }
 
-cmRC_t     cmScMatcherExec(  cmScMatcher* p, unsigned smpIdx, unsigned status, cmMidiByte_t d0, cmMidiByte_t d1, unsigned* scLocIdxPtr )
+cmRC_t     cmScMatcherExec(  cmScMatcher* p, unsigned smpIdx, unsigned muid, unsigned status, cmMidiByte_t d0, cmMidiByte_t d1, unsigned* scLocIdxPtr )
 {
   bool     fl  = p->mbi > 0;
   cmRC_t   rc  = cmOkRC;
@@ -1513,7 +1514,7 @@ cmRC_t     cmScMatcherExec(  cmScMatcher* p, unsigned smpIdx, unsigned status, c
     *scLocIdxPtr = cmInvalidIdx;
 
   // update the MIDI buffer with the incoming note
-  if( cmScMatcherInputMidi(p,smpIdx,status,d0,d1) == false )
+  if( cmScMatcherInputMidi(p,smpIdx,muid,status,d0,d1) == false )
     return rc;
 
   // if the MIDI buffer transitioned to full then perform an initial scan sync.
@@ -2485,7 +2486,7 @@ cmRC_t cmScAlignScanToTimeLineEvent( cmScMatcher* p, cmTlH_t tlH, cmTlObj_t* top
     // if the time line MIDI msg a note-on
     if( (mep->msg->status&0xf0) == kNoteOnMdId )
     {
-      rc = cmScMatcherExec(p, mep->obj.seqSmpIdx, mep->msg->status, mep->msg->u.chMsgPtr->d0, mep->msg->u.chMsgPtr->d1, NULL );
+      rc = cmScMatcherExec(p, mep->obj.seqSmpIdx, mep->msg->uid, mep->msg->status, mep->msg->u.chMsgPtr->d0, mep->msg->u.chMsgPtr->d1, NULL );
 
       switch( rc )
       {
diff --git a/cmProc4.h b/cmProc4.h
index d10f0bf..a2c5c44 100644
--- a/cmProc4.h
+++ b/cmProc4.h
@@ -145,6 +145,7 @@ extern "C" {
   typedef struct
   {
     unsigned mni;    // unique identifier for this MIDI note - used to recognize when the cmScMatcher backtracks.
+    unsigned muid;   // MIDI file event msg unique id (See cmMidiTrackMsg_t.uid)
     unsigned smpIdx; // time stamp of this event
     unsigned pitch;  // MIDI note pitch
     unsigned vel;    //  "    "   velocity
@@ -208,6 +209,7 @@ extern "C" {
     unsigned scEvtIdx;  // score event index 
     unsigned mni;       // index of the performed MIDI event associated with this score location
     unsigned smpIdx;    // sample time index of performed MIDI event
+    unsigned muid;      // MIDI file event msg unique id (See cmMidiTrackMsg_t.uid)
     unsigned pitch;     // performed pitch 
     unsigned vel;       // performed velocity
     unsigned flags;     // smTruePosFl | smFalsePosFl 
@@ -297,12 +299,14 @@ extern "C" {
   // will be set with the matched scLocIdx of the match.
   // If this call does not result in a successful match *scLocIdxPtr is set
   // to cmInvalidIdx.
+  // 'muid' is the unique id associated with this MIDI event under the circumstances
+  // that the event came from a MIDI file.  See cmMidiFile.h cmMidiTrackMsg_t.uid.
   // Return:
   // cmOkRC  - Continue processing MIDI events.
   // cmEofRC - The end of the score was encountered.
   // cmInvalidArgRC - scan failed or the object was in an invalid state to attempt a match.
   // cmSubSysFailRC - a scan resync failed in cmScMatcherStep().
-  cmRC_t     cmScMatcherExec(  cmScMatcher* p, unsigned smpIdx, unsigned status, cmMidiByte_t d0, cmMidiByte_t d1, unsigned* scLocIdxPtr );
+  cmRC_t     cmScMatcherExec(  cmScMatcher* p, unsigned smpIdx, unsigned muid, unsigned status, cmMidiByte_t d0, cmMidiByte_t d1, unsigned* scLocIdxPtr );
 
   void cmScMatcherPrint( cmScMatcher* p );