Change the sound for a channel - 1

• We’ve seen that a MIDI channel points at a particular patch, using bank and program numbers.
• Changing the sound for a channel means changing those bank and program numbers.
• To change the program number, the MIDI controller must send a ‘Program Change’ MIDI message, with the new program number. This just changes the patch that is used from the current bank, not the bank itself.
• To change the bank, the controller must send some combination of ‘Bank LSB’ and ‘Bank MSB’ messages.