Yes indeed, we here at Starr Labs have been working on the iTartm, a MIDI guitar/instrument application for the iPhone and iPad. The more we labor over what we want the iTartm to accomplish the more we expand its scope of control, programmability, customization, and interactivity. Think pages of customizable control screen surfaces with dozens of controller and trigger types, arranged and implemented however you like. That said, we invite any serious programmers/developers to join us in the iTartm conversation. Seriously, contact Harvey Starr firstname.lastname@example.org and be a part of the Starr Labs team that unveils the best MIDI guitar/instrument application onto the world, the iTartm!