Konkreet Labs‘ Performer iPad app might not create music for you, but instead lets you control anything that receives OSC or MIDI, and in a pretty mind-bending, and sumptuously visual way. Don’t understand just on earth all the shapes, waves and swirls work? Well, we didn’t either, but once you just into it, it’s a pretty wonderful system, though I’m not sure if we’d trust it just yet from on-stage. You can grab it in the App Store here.