Here's all the details directly from audioMIDI.com and VirSyn...
Tremendous music creation features including two studio-quality, fully programmable virtual analog monophonic synthesizers and a fully-editable sample-based drum machine featuring eight drum "kits". iSyn lets users play music live with an onscreen piano keyboard and eight drum pads for live "jam" sessions or users can use the grid sequencer mode to easily and visually enter notes for automated playback of two synthesizer tracks and one drum track. iSyn can even play a beat and synth track while users play live over sequence tracks for a one-man "iPhone band". iSyn lets users subtly or wildly modulate sound parameters with its X/Y touch screen or by tilting front to back and left and right using iPhone's accelerometer motion-sensing technology.
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