diff --git a/Tone/signal/Add.js b/Tone/signal/Add.js
index a9abe6e4..83235829 100644
--- a/Tone/signal/Add.js
+++ b/Tone/signal/Add.js
@@ -27,7 +27,7 @@ define(["Tone/core/Tone", "Tone/signal/Signal", "Tone/core/Gain"], function(Tone
 	 */
 	Tone.Add = function(value){
 
-		Tone.Param.call(this);
+		Tone.Signal.call(this);
 		this.createInsOuts(2, 0);
 
 		/**
@@ -44,9 +44,10 @@ define(["Tone/core/Tone", "Tone/signal/Signal", "Tone/core/Gain"], function(Tone
 		this._param = this.input[1] = new Tone.Signal(value);
 
 		this._param.connect(this._sum);
+		this.proxy = false;
 	};
 
-	Tone.extend(Tone.Add, Tone.Param);
+	Tone.extend(Tone.Add, Tone.Signal);
 
 	//return the connect method back to signal
 	Tone.Add.prototype.connect = Tone.SignalBase.prototype.connect;
@@ -56,7 +57,7 @@ define(["Tone/core/Tone", "Tone/signal/Signal", "Tone/core/Gain"], function(Tone
 	 *  @returns {Tone.Add} this
 	 */
 	Tone.Add.prototype.dispose = function(){
-		Tone.Param.prototype.dispose.call(this);
+		Tone.Signal.prototype.dispose.call(this);
 		this._sum.dispose();
 		this._sum = null;
 		return this;
diff --git a/Tone/signal/GreaterThan.js b/Tone/signal/GreaterThan.js
index ffeb5f10..97b7ffa0 100644
--- a/Tone/signal/GreaterThan.js
+++ b/Tone/signal/GreaterThan.js
@@ -16,7 +16,7 @@ define(["Tone/core/Tone", "Tone/signal/GreaterThanZero", "Tone/signal/Subtract",
 	 */
 	Tone.GreaterThan = function(value){
 
-		Tone.Param.call(this);
+		Tone.Signal.call(this);
 		this.createInsOuts(2, 0);
 
 		/**
@@ -36,9 +36,10 @@ define(["Tone/core/Tone", "Tone/signal/GreaterThanZero", "Tone/signal/Subtract",
 
 		//connect
 		this._param.connect(this._gtz);
+		this.proxy = false;
 	};
 
-	Tone.extend(Tone.GreaterThan, Tone.Param);
+	Tone.extend(Tone.GreaterThan, Tone.Signal);
 
 	//return the connect method back to signal
 	Tone.GreaterThan.prototype.connect = Tone.SignalBase.prototype.connect;
@@ -48,7 +49,7 @@ define(["Tone/core/Tone", "Tone/signal/GreaterThanZero", "Tone/signal/Subtract",
 	 *  @returns {Tone.GreaterThan} this
 	 */
 	Tone.GreaterThan.prototype.dispose = function(){
-		Tone.Param.prototype.dispose.call(this);
+		Tone.Signal.prototype.dispose.call(this);
 		this._gtz.dispose();
 		this._gtz = null;
 		return this;
diff --git a/Tone/signal/Multiply.js b/Tone/signal/Multiply.js
index 603c6dec..1a96f8e1 100644
--- a/Tone/signal/Multiply.js
+++ b/Tone/signal/Multiply.js
@@ -7,7 +7,7 @@ define(["Tone/core/Tone", "Tone/core/Param", "Tone/core/Gain", "Tone/signal/Sign
 	 *          multiplies the incoming signal by that value.
 	 *
 	 *  @constructor
-	 *  @extends {Tone.Param}
+	 *  @extends {Tone.Signal}
 	 *  @param {number=} value Constant value to multiple. If no value is provided,
 	 *                         it will return the product of the first and second inputs
 	 *  @example
@@ -24,7 +24,7 @@ define(["Tone/core/Tone", "Tone/core/Param", "Tone/core/Gain", "Tone/signal/Sign
 	 */
 	Tone.Multiply = function(value){
 
-		Tone.Param.call(this);
+		Tone.Signal.call(this);
 		this.createInsOuts(2, 0);
 
 		/**
@@ -42,11 +42,11 @@ define(["Tone/core/Tone", "Tone/core/Param", "Tone/core/Gain", "Tone/signal/Sign
 		 *  @private
 		 */
 		this._param = this.input[1] = this.output.gain;
-
 		this.value = Tone.defaultArg(value, 0);
+		this.proxy = false;
 	};
 
-	Tone.extend(Tone.Multiply, Tone.Param);
+	Tone.extend(Tone.Multiply, Tone.Signal);
 
 	Tone.Multiply.prototype.connect = Tone.SignalBase.prototype.connect;
 
@@ -55,7 +55,7 @@ define(["Tone/core/Tone", "Tone/core/Param", "Tone/core/Gain", "Tone/signal/Sign
 	 *  @returns {Tone.Multiply} this
 	 */
 	Tone.Multiply.prototype.dispose = function(){
-		Tone.Param.prototype.dispose.call(this);
+		Tone.Signal.prototype.dispose.call(this);
 		this._mult.dispose();
 		this._mult = null;
 		this._param = null;
diff --git a/Tone/signal/Signal.js b/Tone/signal/Signal.js
index 5e3b00de..a1cc9d76 100644
--- a/Tone/signal/Signal.js
+++ b/Tone/signal/Signal.js
@@ -201,6 +201,19 @@ define(["Tone/core/Tone", "Tone/signal/WaveShaper", "Tone/type/Type", "Tone/core
 		}
 	});
 
+	/**
+	 * Return the current signal value at the given time.
+	 * @param  {Time} time When to get the signal value
+	 * @return {Number}
+	 */
+	Tone.Signal.prototype.getValueAtTime = function(time){
+		if (this._param.getValueAtTime){
+			return this._param.getValueAtTime(time);
+		} else {
+			return Tone.Param.prototype.getValueAtTime.call(this, time);
+		}
+	};
+
 	/**
 	 * Wrap the native scheduling methods with a method 
 	 * that also applies the automation to all the proxied connections.
diff --git a/Tone/signal/Subtract.js b/Tone/signal/Subtract.js
index c585722d..ca3a19c8 100644
--- a/Tone/signal/Subtract.js
+++ b/Tone/signal/Subtract.js
@@ -25,7 +25,7 @@ define(["Tone/core/Tone", "Tone/signal/Add", "Tone/signal/Negate", "Tone/signal/
 	 */
 	Tone.Subtract = function(value){
 
-		Tone.Param.call(this);
+		Tone.Signal.call(this);
 		this.createInsOuts(2, 0);
 
 		/**
@@ -49,11 +49,11 @@ define(["Tone/core/Tone", "Tone/signal/Add", "Tone/signal/Negate", "Tone/signal/
 		 *  @type {Tone.Signal}
 		 */
 		this._param = this.input[1] = new Tone.Signal(value);
-
 		this._param.chain(this._neg, this._sum);
+		this.proxy = false;
 	};
 
-	Tone.extend(Tone.Subtract, Tone.Param);
+	Tone.extend(Tone.Subtract, Tone.Signal);
 
 	//return the connect method back to signal
 	Tone.Subtract.prototype.connect = Tone.SignalBase.prototype.connect;
@@ -63,7 +63,7 @@ define(["Tone/core/Tone", "Tone/signal/Add", "Tone/signal/Negate", "Tone/signal/
 	 *  @returns {Tone.SignalBase} this
 	 */
 	Tone.Subtract.prototype.dispose = function(){
-		Tone.Param.prototype.dispose.call(this);
+		Tone.Signal.prototype.dispose.call(this);
 		this._neg.dispose();
 		this._neg = null;
 		this._sum.disconnect();
diff --git a/Tone/signal/TickSignal.js b/Tone/signal/TickSignal.js
index 3a687362..e2bc31ae 100644
--- a/Tone/signal/TickSignal.js
+++ b/Tone/signal/TickSignal.js
@@ -11,15 +11,25 @@ define(["Tone/core/Tone", "Tone/signal/Signal"], function(Tone){
 	 * @param {Number} value The initial value of the signal
 	 * @extends {Tone.Signal}
 	 */
-	Tone.TickSignal = function(value){
+	Tone.TickSignal = function(value, param){
 
 		value = Tone.defaultArg(value, 1);
 
 		Tone.Signal.call(this, {
 			"units" : Tone.Type.Ticks,
-			"value" : value
+			"value" : value,
 		});
 
+		if (!param){
+			var signal = this.context.createConstantSource();
+			this._param = signal.offset;
+			this.value = value;
+			this.output = signal;
+			signal.start(0);
+		} else {
+			this._param = param;
+		}
+
 		//extend the memory
 		this._events.memory = Infinity;
 
@@ -31,12 +41,13 @@ define(["Tone/core/Tone", "Tone/signal/Signal"], function(Tone){
 			"time" : 0,
 			"value" : value
 		});
+		this.proxy = false;
 	};
 
 	Tone.extend(Tone.TickSignal, Tone.Signal);
 	
 	/**
-	 * Wraps Tone.Signal methods so that they also
+	 * Wraps Tone.Param methods so that they also
 	 * record the ticks.
 	 * @param  {Function} method
 	 * @return {Function}