Beat Maker is a drum loop emulator you can use as a background percussion while you play your guitar, written in QT by Danilo Cesarcom. It actually looks and sounds great, and it was released in a while, but went into deep sleep.
Video preview:
http://www.youtube.com/watch?v=Ke0zBk73_Zc
Download at:
http://labs.danilocesar.com/blog/201...itten-with-qt/