Target application: WildChords

Neat iPad app that listens to the mic on your iPad to analyze your guitar playing, then runs a game where you have to play particular chords to lead animals out of the zoo. Like Guitar Hero, except it actually teaches you to play the guitar!

The market cap is stupidly large. I mean, really stupidly large - do you know how many people want to learn an instrument? It's applying the superstimulus of gamification to allow you to reach a goal you desire. So I predict they're going to make money by the boatload.

I'd like to reverse engineer their signal processing (which they say is patent pending, to which I say boo!) and provide it for open-source games. That would be neat.