diff --git a/supercollider/cicc_gui.scd b/supercollider/cicc_gui.scd
index 1a3489e..a132f76 100644
--- a/supercollider/cicc_gui.scd
+++ b/supercollider/cicc_gui.scd
@@ -15,16 +15,16 @@
 	masterVol = 1;
 
 	clockStringFunc = {
-		arg beat;
-		var measure, measureBeat, leadSpace;
-		measure = ((beat / 2) + 1).asInteger.asString;
-		measureBeat = ((beat % 2) + 1).asInteger.asString;
-		leadSpace = (3 - measure.size).collect({" "}).join;
-		leadSpace ++ measure ++ "." ++ measureBeat
+		arg measure, beat;
+		var measureString, beatString, leadSpace;
+		measureString = measure.asInteger.asString;
+		beatString = beat.asInteger.asString;
+		leadSpace = (3 - measureString.size).collect({" "}).join;
+		leadSpace ++ measureString ++ "." ++ beatString
 	};
 	// [-30, -105, -104].asAscii and [-30, -105, -113].asAscii are unicode inverse bullet and normal bullet, respectively
-	metronomeStringFunc = { arg beat; if(beat % 2 == 0, {[-30, -105, -104].asAscii}, {[-30, -105, -113].asAscii}) };
-	metronomeColorFunc = { arg beat; if(beat % 2 == 0, {Color.red},{Color.black}) };
+	metronomeStringFunc = { arg beat; if(beat == 1, {[-30, -105, -104].asAscii}, {[-30, -105, -113].asAscii}) };
+	metronomeColorFunc = { arg beat; if(beat == 1, {Color.red},{Color.black}) };
 
 	~appStatusFunc = Task({
 		loop {
@@ -39,12 +39,15 @@
 
 	win = Window("Counterfeiting in Colonial Connecticut", Rect(500, 500, 1100, 500), false).front;
 	masterView = {
-		var view, masterIndicators, master, generator, transport, ranSeed, startPosText, pauseButton, clock, metronome;
+		var view, masterIndicators, master, generator, transport, ranSeed, startPosText,
+		prevSectionButton, prevSubsectionButton, playStopButton, nextSubsectionButton, nextSectionButton, clock, metronome;
 
 		OSCFunc({ arg msg, time;
 			{
-				var beat = msg[3];
-				clock.string = clockStringFunc.value(beat);
+				var measure, beat;
+				measure = msg[3];
+				beat = msg[4];
+				clock.string = clockStringFunc.value(measure, beat);
 				metronome.stringColor = metronomeColorFunc.value(beat);
 				metronome.string = metronomeStringFunc.value(beat);
 			}.defer;
@@ -65,7 +68,31 @@
 			[~appStatus = StaticText(view).string_("status: ready"), stretch: 1],
 			nil);
 		transport = HLayout(
-			Button(view).states_([["play", Color.black], ["stop", Color.black, Color.grey]]).action_(
+			prevSectionButton = Button(view).states_([["<<", Color.black]]).action_({| pState |
+				if((~currentSection - 4) >= 0, {
+					if(~isPlaying, {
+						~patterns[~currentSection].stop;
+						~currentSection = (~currentSection - 4).trunc(4);
+						~play.set(\sel, ~currentSection % 2);
+						~patterns[~currentSection].play(quant: 0)
+					},{
+						~currentSection = ~currentSection - 1;
+					})
+				});
+			}),
+			prevSubsectionButton = Button(view).states_([["<", Color.black]]).action_({| pState |
+				if((~currentSection - 1) >= 0, {
+					if(~isPlaying, {
+						~patterns[~currentSection].stop;
+						~currentSection = (~currentSection - 1);
+						~play.set(\sel, ~currentSection % 2);
+						~patterns[~currentSection].play(quant: 0)
+					},{
+						~currentSection = ~currentSection - 1;
+					})
+				})
+			}),
+			playStopButton = Button(view).states_([["play", Color.black], ["stop", Color.black, Color.grey]]).action_(
 				/*
 				{| pState |
 					pauseButton.value = 0;
@@ -74,14 +101,40 @@
 						{~play.set(\startPos, startPos, \playRate, 1, \startTrig, 1)})}
 				*/
 				{| pState |
-					pauseButton.value = 0;
-					if(pState.value == 0, {~patterns[0].stop;
-						clock.string = clockStringFunc.value((startPos * ~totalDur * 5).asInteger)},
-					{~currentSection = 0; ~play.set(\sel, ~currentSection % 2); ~patterns[~currentSection].play})}
+					if(pState.value == 0, {
+						~isPlaying = false;
+						~patterns[~currentSection].stop;
+					},{
+						~isPlaying = true;
+						~play.set(\sel, ~currentSection % 2);
+						~patterns[~currentSection].play(quant: 0)
+					})
+				}
 			),
-			pauseButton = Button(view).states_([["pause", Color.black], ["pause", Color.black, Color.grey]]).action_(
-				{| pState |
-					if(pState.value == 1, {~play.set(\playRate, 0)},{~play.set(\playRate, 1)})}),
+			nextSubsectionButton = Button(view).states_([[">", Color.black]]).action_({| pState |
+				if((~currentSection + 1) < ~patterns.size, {
+					if(~isPlaying, {
+						~patterns[~currentSection].stop;
+						~currentSection = (~currentSection + 1);
+						~play.set(\sel, ~currentSection % 2);
+						~patterns[~currentSection].play(quant: 0)
+					},{
+						~currentSection = ~currentSection + 1;
+					})
+				})
+			}),
+			nextSectionButton = Button(view).states_([[">>", Color.black]]).action_({| pState |
+				if((~currentSection + 4) < ~patterns.size, {
+					if(~isPlaying, {
+						~patterns[~currentSection].stop;
+						~currentSection = (~currentSection + 4).trunc(4);
+						~play.set(\sel, ~currentSection % 2);
+						~patterns[~currentSection].play(quant: 0)
+					},{
+						~currentSection = ~currentSection - 1;
+					})
+				})
+			}),
 			StaticText(view).string_("start time"),
 			[Slider(view, Rect(0, 0, 30, 5)).action_(
 				{|pos|
diff --git a/supercollider/cicc_main.scd b/supercollider/cicc_main.scd
index 5c8999d..4260657 100644
--- a/supercollider/cicc_main.scd
+++ b/supercollider/cicc_main.scd
@@ -20,6 +20,8 @@ appEnvironment.push;
 ~scoreData = ~allMusicData[1];
 ~sectionOffsets = ~allMusicData[2];
 ~currentSection = 0;
+~currentSubsection = 0;
+~isPlaying = false;
 
 ~play = Synth.new(\masterPlayerControl);
 
diff --git a/supercollider/cicc_sonifier.scd b/supercollider/cicc_sonifier.scd
index e8bea11..4326f09 100644
--- a/supercollider/cicc_sonifier.scd
+++ b/supercollider/cicc_sonifier.scd
@@ -54,10 +54,13 @@ SynthDef(\masterPlayerControl, {
 }).add;
 
 
-SynthDef(\transport, {arg beat, fin;
-	SendReply.kr(Changed.kr(beat * (beat < fin)),'/measureClock', values: [beat]);
-	SendReply.kr(TDelay.kr(Changed.kr(beat * (beat < fin)), 0.25),'/measureClockReset', values: [beat]);
-	SendReply.kr(Changed.kr(beat < fin),'/playNextSubsection');
+SynthDef(\transport, {arg measure = 0, beat = 0, gate = 1, dur = 1;
+	measure.poll;
+	beat.poll;
+	SendReply.kr(Impulse.kr(0) * (measure > 0) * (beat > 0),'/measureClock', values: [measure, beat]);
+	SendReply.kr(TDelay.kr(Impulse.kr(0) * (measure > 0) * (beat > 0), 0.25),'/measureClockReset');
+	SendReply.kr(Impulse.kr(0) * (measure < 1) * (beat < 1),'/playNextSubsection');
+	EnvGen.kr(Env.sine(dur), gate, doneAction: 2);
 }).add;
 
 
@@ -132,14 +135,16 @@ SynthDef(\droneOut, {arg gate, bus;
 
 
 OSCFunc({ arg msg, time;
-	~currentSection = ~currentSection + 1;
-	~play.set(\sel, ~currentSection % 2);
-	~patterns[~currentSection].play(quant: 0)
+	if((~currentSection + 1) < ~patterns.size, {
+		~currentSection = ~currentSection + 1;
+		~play.set(\sel, ~currentSection % 2);
+		~patterns[~currentSection].play(quant: 0)
+	})
 },'/playNextSubsection', s.addr);
 
 //~~~~gen music
 ~genPatterns = {arg guitarSeqIn, accompLowSeqIn, accompHighSeqIn, sectionSeqIn, tempo = 0.08;
-	var calcSustains, genSectionSec, sectionLimits;
+	var calcSustains, genSectionSec, sectionLimits, measureCount;
 
 	//~~~~helper sus function
 	calcSustains = {arg stringSeq, durSeq;
@@ -186,16 +191,26 @@ OSCFunc({ arg msg, time;
 		resSeqs
 	};
 
+	measureCount = 0;
 	sectionLimits = [];
 	sectionSeqIn.slice(nil, 0).add(100000).doAdjacentPairs({arg a, b; sectionLimits = sectionLimits.add([a, b])});
 	sectionLimits.collect({arg timePair, secIndex;
-		var startTime, endTime, endBeat,
+		var startTime, endTime, beatLength, beatSeq, measureSeq,
 		guitarSecSeq, accompLowSecSeq, accompHighSecSeq,
 		stringSeq, fretSeq, durSeq, susSeq, trigSeq, openStrings, pattern;
 
 		startTime = timePair[0];
 		endTime = timePair[1];
-		endBeat = endTime - startTime;
+
+		if((secIndex % 4) == 0, {measureCount = 0});
+		beatLength = (endTime - startTime) / 8;
+		beatSeq = ((beatLength / 2) - 1).asInteger.collect({[1, 2]});
+		beatSeq = if((beatLength % 2) == 0, {beatSeq.add([1, 2])}, {beatSeq.add([1, 2, 3])});
+		measureSeq = measureCount + beatSeq.collect({arg measure, mIndex; measure.collect({mIndex + 1})}).flat;
+		measureCount = measureSeq.last;
+		beatSeq = beatSeq.flat;
+		measureSeq = measureSeq.add(0);
+		beatSeq = beatSeq.add(0);
 
 		guitarSecSeq = genSectionSec.value(guitarSeqIn, startTime, endTime, 0);
 		accompLowSecSeq = genSectionSec.value(accompLowSeqIn, startTime, endTime, 1);
@@ -260,10 +275,11 @@ OSCFunc({ arg msg, time;
 				\amp, 0.5,
 				//\bus, if(secIndex % 2 == 0, {~accompHighBusA.index}, {~accompHighBusB.index})),
 				\bus, ~accompHighBus.index),
-			Pmono(\transport,
-				\beat, Pseq((0..((endBeat / 8).asInteger))),
-				\dur, tempo * 8,
-				\fin, ((endBeat / 8).asInteger).postln
+			Pbind(
+				\instrument, \transport,
+				\measure, Pseq(measureSeq),
+				\beat, Pseq(beatSeq),
+				\dur, tempo * 8
 			)
 		]);
 		pattern