It should be very straightforward forward to record notes in GB - ie. press the record button. If MG just run in the background and set to the “External MIDI Output” patch, it will feed feed the midi notes to GB.
It should be very straightforward forward to record notes in GB - ie. press the record button. If MG just run in the background and set to the “External MIDI Output” patch, it will feed feed the midi notes to GB.