One of the things I love about the iPad is the tremendous variety of midi GUIs available. Along with traditional keyboards one can tap, slide pinch with one two or all fingers on circles, squares, hexagons, guitar necks, blank surfaces and user defined interfaces. Control multiple instruments use the accelerometers to generate mod wheel CCs. Change the scales, tune in third’s fourths or fifths. (Many inventive ways to represent the circle of fifths and interval relationships come out on what seemsto be a daily basis). Remember, the D in MIDI stands for digital and it’s time to rethink the way we interact with music. And with Cubasis and Audiobus you can capture the midi and audio and edit away. Or use the 'pad as a controller to hardware midi devices and capture it in Cubase on a desk or lap top.