message: updating private variable
diff: @@ -35,6 +35,7 @@ define(["Tone/core/Tone", "Tone/component/Panner", "Tone/component/Volume"], fun
  /**
  * The volume node
  * @type {Tone.Volume}
  + * @private
  */
  this._volume = this.output = new Tone.Volume(options.volume);
  