Drumkit is a virtual drumkit, that lets you play percussion sounds by tapping sound pads. The application contains two views for playing, a simple view with 2D pads and a whole 3D like drumset to play with. You can record your beats and play them back afterwards. It is also possible to play the drums on top of your last recording.
The paid, ad-free version of this game is available at: http://www.windowsphone.com/s?appid=7838ad9c-114f-4caa-9f62-ba4273040457