Symphonix Evolution continues to evolve. We're currently working on an integrated Rhythm Maker (drum sequencer) so that you can create and add your own percussion sequences!
You can save your rhythms and drag them into any song you create, and even use percussion sets for external MIDI devices. Symphonix Evolution allows the resulting patterns to be repeated throughout the track, or looped for a set number of times. It is even possible to add "stop", "pause" and "resume" events into your song so that you have fine control over pattern playback.
The next update is not far away and the Rhythm Maker will be available soon!