MooCowMusic band has just been released a day ago, and already the new instruments are popping up in the installer. I think that this app is going to be worth gold in a very short time.

The new instruments are actually very cool.
You now have a, Leadguitar, Rhytmguitar, Flute, ElectroBoard and a DaftBand (very very cool)
You can find them all in your installer.
» New instruments for MooCowMusic Band.