Rytmik Retrobits is an application for creating rhythmical and melodic themes and for composing whole songs. Its user interface blends the fast and well-arranged interface of classic drum machines with flexible pattern interface of popular trackers and with modern sound library. It contains more than 180 carefully selected authentic retro sound samples of electronic drums, percussions, bass, melodic instruments and effects from 8-bit and 16-bit computers and classic consoles.

via Rytmik Retrobits for Nintendo DSiWare: Pocket music station.