It's probably time for me to lay off of Smule -- I've said that their Ocarina app might be the silliest musical app in the App Store, but we have a new winner: Cat Piano is just plain loony: a piano made up of cats meowing, like those old Christmas recordings, but playable. There are a few different cat sounds to play (from "Furball" to "Housecat"), and even a regular piano if you just want to tickle the ivories a little bit. Most of the reviews on the App Store say people are using it to mess with their cats, but there's definitely a musical instrument here -- if Ocarina can be used as an instrument, the Cat Piano can, too.
And in fact, the developers are challenging you to prove it -- they're giving away a Nintendo DS (interesting choice of prizes -- an iPod touch might be more apt) to the person who makes the best video using Cat Piano. I don't know if you could beat that Jingle Cats video, but you can certainly try. The contest starts on Thursday, and goes until March 20th, so you've got a little over a month to get the cat sounds down.
Ocarina, you'll remember, also turned out some watchable videos, so we're interested to see what comes out of this contest.