The Roland TR-707 Rhythm Composer is a sample-based drum machine manufactured by Roland from 1984. It was a staple of early house music and has been used by artists as diverse as Aphex Twin and Phil Collins.

The original hardware is entirely sample-based with the only control available for each hit being volume, however the Ableton Drum Rack gives you many more options for sound transformation, letting you take the sound well beyond the possibilities of the original hardware.