diff --git a/main.ck b/main.ck
index f1b9cd8..877b140 100644
--- a/main.ck
+++ b/main.ck
@@ -1,52 +1,56 @@
 // TODO: turn off adcThru when recording
 // Effects chain
-adc => Gain adcThru => Gain mixer => dac; // Monitor input through a mixer
+adc => Gain adcThru => dac; // Monitor input through a mixer
 SampleChan channels[4];
 
 // Levels
 //0 => adc.gain;
 .5 => adcThru.gain;
 
+// Global loop time
+1::second => dur loopTime;
+
 // Each channel should output to the mixer
-for( 0 => int i; i < channels.cap(); i++ ) { channels[i].outputTo(mixer); }
+for( 0 => int i; i < channels.cap(); i++ ) { channels[i].outputTo(dac); }
 
 // Listen to OSC messages
 OscIn oin; 9000 => oin.port; 
 oin.listenAll(); 
 OscMsg msg;
 
+// Start the metronome
+0 => int metronomeLevel;
+spork ~plip();
+
 // Event loop
 while (true) { 
     oin => now; 
-    //1::second => now;
     while (oin.recv(msg)) { 
-        if (msg.address=="/input") 
-        {
+        if (msg.address=="/input") {
             msg.getFloat(0) => adc.gain;
             msg.getFloat(1) => adcThru.gain;
         }
-        else if(msg.address=="/delay")
-        {
-            msg.getFloat(0)::second => dur loopPoint;
+        else if(msg.address=="/delay") {
+            msg.getFloat(0)::second => loopTime;
             msg.getFloat(1) => float feedback;
             for( 0 => int i; i < channels.cap(); i++ ) { 
-                channels[i].setLoopPoint(loopPoint); 
+                channels[i].setLoopPoint(loopTime); 
                 channels[i].setFeedback(feedback);
             }
          }
-        else if(msg.address=="/channel")
-        {
+        else if(msg.address=="/channel") {
             msg.getInt(0) => int i;
             channels[i].setGain(msg.getFloat(1));
             channels[i].setPan(msg.getFloat(2));
         }
-        else if(msg.address=="/arm")
-        {
+        else if(msg.address=="/arm") {
             msg.getInt(0) => int channel;
             for( 0 => int i; i < channels.cap(); i++ ) { channels[i].arm(i==channel); }
         }
-        else if(msg.address=="/clear")
-        {
+        else if(msg.address=="/metronome") {
+            msg.getInt(0) => metronomeLevel;
+        }
+        else if(msg.address=="/clear") {
             msg.getInt(0) => int channel;
             channels[channel].clear();
         }
@@ -56,7 +60,7 @@ while (true) {
 public class SampleChan
 {
     // Chain
-    adc => LiSa sample => LPF filter;
+    adc => LiSa sample => LPF filter => Pan2 panner;
 
     // Setup
     10::second => sample.duration;  //This is the max duration
@@ -71,12 +75,12 @@ public class SampleChan
     public void setFeedback( float fb ) { fb => sample.feedback; }
     public void setFilter( float freq ) { freq => filter.freq; }
     public void setGain( float gain ) { gain => filter.gain; }
-    public void setPan( float pan ) { }
+    public void setPan( float pan ) { pan => panner.pan; }
     public void clear() { sample.clear(); }
 
     public void outputTo(UGen ugen) { 
         1 => sample.play; 
-        filter => ugen; 
+        panner => ugen; 
     }
 
     public void arm(int value) {
@@ -85,3 +89,21 @@ public class SampleChan
     }
 }
 
+
+// TODO timing here should be done using events
+fun void plip()
+{
+    SinOsc s => dac;
+    0.01::second => dur plipTime;
+
+    while(true){
+        for( 0 => int i; i < 4; i++ ) { 
+            if (i==0){2000 => s.freq;} else {1000 => s.freq;}
+            .1*metronomeLevel => s.gain;
+            plipTime => now;
+            0 => s.gain;
+            loopTime/4 - plipTime => now;
+        }
+    }
+
+}
diff --git a/main.py b/main.py
index a5f65da..48ffc5a 100644
--- a/main.py
+++ b/main.py
@@ -102,6 +102,7 @@ class DelayPanel(wx.Panel):
         self.SetSizerAndFit(sizer)
         self.delayTime.Bind(wx.EVT_SCROLL, self.update)
         self.feedback.Bind(wx.EVT_SCROLL, self.update)
+        self.metronome.Bind(wx.EVT_TOGGLEBUTTON, self.switchMetronome)
         self.update(None)
 
     def update(self, evt):
@@ -110,6 +111,10 @@ class DelayPanel(wx.Panel):
         b=self.feedback.slider.GetValue()/100.
         sendOSCMsg("/delay", [a, b])
 
+    def switchMetronome(self, evt):
+        """ Send OSC messages """
+        sendOSCMsg("/metronome", [int(self.metronome.GetValue())])
+
 class Channel(wx.Panel):
     """ A single channel """
     def __init__(self, parent, index):
diff --git a/run.sh b/run.sh
index 699ed67..b6ef88b 100755
--- a/run.sh
+++ b/run.sh
@@ -1,4 +1,5 @@
 #!/bin/bash
+#chuck scratch.ck
 chuck --bufsize64 main.ck &
 python ./main.py
 pkill -SIGINT chuck
diff --git a/scratch.ck b/scratch.ck
index 4dab6c4..f9d014d 100644
--- a/scratch.ck
+++ b/scratch.ck
@@ -1,7 +1,26 @@
-SinOsc s => Pan2 p => dac;
-1 => p.pan;
+1::second => dur loopTime;
 
-while(1::second => now){
-    // this will flip the pan from left to right
-    p.pan() * -1. => p.pan;
+fun void plip()
+{
+    SinOsc s => dac;
+    0.05::second => dur plipTime;
+    2000 => s.freq;
+
+    while(true){
+        .1 => s.gain;
+        plipTime => now;
+        0 => s.gain;
+        loopTime - plipTime => now;
+    }
+
+}
+
+spork ~plip();
+
+while(true){
+    1::second => now;
+    loopTime - 0.1::second => loopTime;
 }
+
+
+