Each of Live's various tracks (instrumental, returns, and master) are represented by track objects in gibberwocky.
Instrumental tracks are stored in the global tracks object, fx returns are stored in the global returns objects and the
master track is stored in the global master object. Each of these different tracks has slight variations; for example, the master and fx return tracks have no `note` or `velocity` methods; they are unable to host instruments so these messages make no sense. But they also do share a number of methods and properties.
This array holds all of the devices (instruments and effects plugins) for a particuarly track, with the exception of any gibberwocky instances. If you have a gibberwocky instance on an instrument track, this will not be included in this array. Thus, the first plugin on the track would be referred to as track.devices[0].