Music Recording App?

[Brandonforty2]

I have a yamaha DGX keyboard. It has amazing sound quality and a USB port. I do want to record myself playing but I found a problem with sticking my Nexus 7 on the music stand; you can hear me pushing down the keys. What i'm looking for is something like Apple Garage Band for the iPad. I do have one of those cables that allow you to connect USB stuff to your Droid. The keyboard has a USB type-B on it. I do have an iPad with Garage Band on it but I don't want to buy a camera connector kit.