Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Roland MT-32 Multi-Timbre Sound Module is a MIDI synthesizer module first released in 1987 by Roland Corporation. Along with its compatible modules, it established an early de-facto standard in computer music and was the first product in Roland's line of Desktop Music System (DTM) packages in Japan.Within Roland's family of LA synthesizers, the multitimbral MT-32 series constitutes the budget prosumer line for computer music at home, the multitimbral D-10/D-20/D-110 models the professional line for general studio use, and the high-end monotimbral D-50/D-550 models for sophisticated multi-track studio work.