Top music creation apps?

[rendez2k]

I've found a new love for music creation apps such as iDrum, BeatMaker, GrooveMaker and Looptastic and wondered if theres any hidden gems I've missed in the app store?

 

[sfditty]

FingerBeat is pretty cool, though the UI is confusing. I enjoy Ocarina on occasion, even though it makes you look like a tool playing it. MegaSynth is awesome- two rows of keys, you can adjust key width and can change key range easily with a slider, and you can play real chords, with up to five keys (that's all multitouch allows).