diff --git a/software/apps/Motion/Center/Center.ino b/software/apps/Motion/Center/Center.ino
index e50fc80..78eb5f7 100644
--- a/software/apps/Motion/Center/Center.ino
+++ b/software/apps/Motion/Center/Center.ino
@@ -7,14 +7,15 @@
 #include "Motor.h"
 #include "Music.h"
 
-int pos;    // position from analogRead
-int force;  // computed from pos and k
-int k = 2;  // spring constant
-int duty;   // pwm duty for Timer1 (range 0 - 1023) 10-bit resolution
+int posA, posB;    // position from analogRead
+int forceA, forceB;  // computed from pos and k
+int kA, kB = 2;  // spring constant
+//int duty;   // pwm duty for Timer1 (range 0 - 1023) 10-bit resolution
  
 void setup() 
 {
   MotorA.init();
+  MotorB.init();
   Music.init();  
   
 }
@@ -22,15 +23,19 @@ void setup()
 void loop() 
 {
 
-  pos = analogRead(A0);
+  posA = analogRead(A0);
+  posB = analogRead(A3);
   
-  Music.setFrequency(pos);
+  Music.setFrequency1(posA);
+  Music.setFrequency2(posB);
   
-  force = k * (512 - pos);
+  forceA = - kA * (512 - posA);
+  forceB = - kB * (512 - posB);
   //duty = abs(force);
   //duty = min(512, duty);
   
-  MotorA.torque(force);
+  MotorA.torque(forceA);  //force can be -512 to +511
+  MotorB.torque(forceB);  //force can be -512 to +511
   
   //if(force < 0) MotorA.direction(FORWARD);
   //else MotorA.direction(BACKWARD);
diff --git a/software/lib/MMM/Music.h b/software/lib/MMM/Music.h
index f5798b6..c4515d9 100644
--- a/software/lib/MMM/Music.h
+++ b/software/lib/MMM/Music.h
@@ -74,26 +74,26 @@ public:
 	void setDetune1(float detune);
 	void setDetune2(float detune);
 	void setDetune3(float detune);
-	void pitchBend(float b);
+	void pitchBend(float b); // NOT IMPLEMENTED
 	
 	// WAVEFORM FUNCTIONS
-	void setWaveform(uint16_t waveForm);
-	void setWaveform1(uint16_t waveForm);
-	void setWaveform2(uint16_t waveForm);
-	void setWaveform3(uint16_t waveForm);
+	void setWaveform(uint16_t waveForm);    // JUST FOR 8bit WAVEFORMS
+	void setWaveform1(uint16_t waveForm);   //
+	void setWaveform2(uint16_t waveForm);   //
+	void setWaveform3(uint16_t waveForm);   //
 	
 	// GAIN FUNCTIONS
 	void setGainFloat(float value); // 0.0 - 1.0
 	void setGain16bit(uint16_t value); // 0 - 65535
 	void setGain(uint16_t value); // 0 - 65535
-	void setGain(float value); // 0.0 - 1.0
+	void setGain(float value); // 0.0 - 1.0         USE THIS
 	void setGain1(uint16_t value); // 0 - 65535 
 	void setGain2(uint16_t value); // 0 - 65535
 	void setGain3(uint16_t value); // 0 - 65535
-	void setGain1(float value); // 0.0 - 1.0 
-	void setGain2(float value); // 0.0 - 1.0
-	void setGain3(float value); // 0.0 - 1.0
-	float getGainFloat();
+	void setGain1(float value); // 0.0 - 1.0        USE THIS
+	void setGain2(float value); // 0.0 - 1.0        USE THIS
+	void setGain3(float value); // 0.0 - 1.0        USE THIS
+	float getGainFloat();       // 0.0 - 1.0        USE THIS
 	uint16_t getGain();
 
 	// NOTE FUNCTIONS
@@ -101,7 +101,7 @@ public:
 	void noteOn(uint8_t note); // 0 - 255
 	void noteOff(uint8_t note); // 0 - 255
 	void noteOff();
-	uint16_t getNoteFrequency(uint8_t note); // 0 - 127
+	uint16_t getNoteFrequency(uint8_t note); // 0 - 127    CHECK THIS OUT
 	
 	// ENVELOPE FUNCTIONS
 	void enableEnvelope();
@@ -113,10 +113,10 @@ public:
 	void setSustain16bit(uint16_t sus); // 0 - 65535
 	void setRelease16bit(uint16_t rel); // 0 - 65535
 	
-	void setAttack(uint8_t att); // 0 - 127
-	void setDecay(uint8_t dec); // 0 - 127
-	void setSustain(uint8_t sus); // 0 - 127
-	void setRelease(uint8_t rel); // 0 - 127	
+	void setAttack(uint8_t att); // 0 - 127             USE THESE ONES
+	void setDecay(uint8_t dec); // 0 - 127              USE THESE ONES
+	void setSustain(uint8_t sus); // 0 - 127            USE THESE ONES
+	void setRelease(uint8_t rel); // 0 - 127            USE THESE ONES
 	
 	void setVelSustain(uint8_t vel); // 0 - 127
 	void setVelPeak(uint8_t vel); // 0 - 127