If you would prefer to call up sounds from your external sequencer, you can do so with MIDI program change messages. The original MIDI specification only allowed for 128 different program locations. The GR-1 has 200 internal Tones, and 200 more Tones can be added with the optional SR-GR1-01 Expansion Board. To call up all of the GR-1's Tones, we can use the newly adopted MIDI bank select controller message.

The GR-1 uses MIDI bank select message control change 0. The value of the control change 0 will change to select the bank of the tone you want to use.

Each of the controller messages needs to be followed immediately with a program change. In sequencing programs the bank number may be requested. Here is an example of how to do this:


1. To call up Tone number 64 BRT STRG, we would need the following messages:

Controller 0 value 0 (Bank 0)
Program Change 64

To call up Tone number 175 AMBIENCE we would need the following messages:

Controller 0 value 1 (Bank 128)
Program Change 4