Chaos Music Composer is a tracker for the Atari 8-bit computers (Atari 400 / 800, Atari XL and Atari XE). It was created in 1990 as Avalon Music Composer (Polish), which was intended for internal use by Avalon Software. It was released commercially in 1992 under the Chaos Music Composer name. It produces module files in the CMC format.
- CMC file format (Polish)