Owner's manual for the Roland TR-626 Rhythm Composer. Warnings, panel descriptions, important notices, outline of the TR-626, connections, basic operation (checking drum voices & sound output, a brief description of rhythm writing, playing & writing rhythm patterns, track writing & playing), applications (functions to use while pattern writing, functions to use while track writing, functions to use while playing a track, miscellaneous functions), storing rhythm patterns in external memory (memory card or tape memory), other useful functions, MIDI (checking the MIDI function, altering a MIDI function setting), tape sync (recording & playing a synchronized signal), before calling the repaires, attachments, specifications. Roland Corporation, 1987.