I want to use my phone to connect to a piano/keyboard that I use, an Alesis Fusion. The Fusion is recognized as an external drive when I attach it to my PC and I can backup or copy new sounds, etc, to the keyboard. . . so, what do I need to do to get an external drive to be recognized from my phone so that I might download info with my phone and then load it onto my keyboard, which is pretty much and external drive. . . which could be ultra cool. Is this possible?