via this Reverb listing
"The Original Roland MC500 MicroComposer is a professional-grade digital sequencer made by Roland. With five channels and MIDI I/O ports, this sequencer allows for precise control of various musical instruments and gear. Perfect for creating intricate music compositions, the Roland MC500 is a reliable and versatile tool for musicians and producers looking to enhance their creative process.Personally, This machine has been the perfect hardware sequencer for my solo gigs and even backup for a duo. It's reliable and simple. It takes no time to set up. I've invested many hours of drum and bass programming into the many songs included on the diskettes (see the list of songs). All original documentation is included. Even though it only has 5 tracks (1 rhythm and 4 music) it easily manages your midi-controlled devices such as stage lights, Patch changes on your guitar's effects pedal, and of course your sound modules. Included is the Roland Rhythm Library, a source of many complex drum patterns of all genres you can employ into your sequences."








































