History
Organizations from around the world believed that General MIDI could be made more versatile, so Roland created the GS standard. It is still an extension of the GM specification, meaning it can provide many extra controllers and sounds while still keeping to the sound map and obeying all the protocols of GM. This means the user of the Roland GS standard will also be able to play back any song designed for General MIDI, while still giving the option to add more effects and sounds. Composers can alter sounds with the Roland GS professionally using a set of Roland exclusive system features that allow the reconfiguration and customization to be achieved. The GS extensions were first introduced and implemented on Roland Sound Canvas series modules, starting with the Roland SC-55 in 1991. The first model supported 317 instruments, 16 simultaneous melodic voices, 8 percussion voices and a compatibility mode for Roland MT-32 (although it only emulated it and lacked programmability of original MT-32) and gained explosive popularity.
The next major step in GS expansion was SC-88 that appeared in 1994. It brought counts up to 32 simultaneous voices, 654 instruments, and 24 drum sets, and occupied a position of high-end tone generator module in the market.
Currently, as software synthesizers become more and more popular, it became possible to reproduce SC-88 in software, but SC-88VL and SC-88Pro still occupy the professional musicians' niche.
In addition to the Sound Canvas series, Roland also provided GS compatibility in its own professional lineup through the JV-30 keyboard and the VE-GS1 expansion board for other JV-series instruments. In addition, GS compatibility is provided in the GM2 specification which Roland helped to create and actively supports.
Read more about this topic: Roland GS
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