The R-8 Human Rhythm Composer is an electronic drum machine introduced in 1989 by Roland Corporation, using PCM voices. The R-8 features velocity- and pressure-sensitive trigger pads, and the ability to create loops of beats. The device has eight individual outputs, 12-voice polyphony, and four-part multitimbral MIDI. The R-8 has one RAM memory card slot for saving user-created patterns and songs, and one slot for PCM ROM cards to augment the internal sound banks. Roland also came with a trimmed down version of the R8 in the form of the Roland R-5 which had less sounds and features than the R-8