message: don't convert to ticks twice
diff: @@ -305,11 +305,10 @@ define(["Tone/core/Tone", "Tone/event/Event", "Tone/type/Type", "Tone/core/Trans
  * @return {Tone.Part} this
  */
  Tone.Part.prototype.cancel = function(after){
  - after = this.toTicks(after);
  this._forEach(function(event){
  event.cancel(after);
  });
  - this._state.cancel(after);
  + this._state.cancel(this.toTicks(after));
  return this;
  };
  