http://www.youtube.com/watch?v=xxypl6kQYFY

iPad Music Software: This is a demo of  Xenon on iPad, an app that turns an iPad into a groovebox-style synth workstation.

via ArtemiyPavlov:

My second experiment with the Xenon groovebox on the iPad. I am using all four synths with my custom sounds, plus the drum pads. Once again, highly recommend this app (it’s universal, so the same app also runs on iPhone and iPod touch).