Yamaha XG or
just XG is an
extension to the General MIDI standard, created by Yamaha. It is
similar in purpose to Roland's GS Standard. Relative to General MIDI,
XG gained popularity by increasing the number of available instruments
from 128 to over 600, and introduced a large set of standard
controllers and parameters that composers could employ to achieve
greater subtlety and realism in their compositions.

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© Justin "Jace" Hill