iPad Ellatron with USB MIDI

Ellatron via MIDI, originally uploaded by Omenie.

Here are a few of the features of the Ella MIDI implementation - 3 voices at once (upper, lower and pads), all can be played
Programmable keyboard split for upper and lower, programmable chord pads if your keyboard supports it (and the Axiom 49 has 8 of them - mighty useful). Ella can be seen responding to controllers on the keyboard with on-screen information keeping you up to date, and controllers are used to change voices, volume, pitch, tone, reverb parameters, and level/pan for each of the upper, lower and pad instruments.