Research->Computer Music
Provides information about Computer Music.  
Entry
Knowledge
Sound Generator Provides information about software synthesizer and external sound generator.
Midi Standards Provides information about differences among GM, GS, and XG. 
Operations of Sound Generator Provides general information about control change, RPN, NRPN, and System Exclusive.
System Exclusive Provides general information about System Exclusive Commands.
Reset Command Provides general information about reset command of GSr, and XG.
File Format Provides general information about various kind of musical file format.
Production
Reference
GM Tone Map Provides list of GM instruments.
GM Drum Map  Provides list of GM Drums.