Connect your TR-8S to begin. Local WAV/MIDI preview works offline.
Settings
Sequencer settings
MIDI
Chrome / Edge · HTTPS · allow MIDI + SysEx. Keep this page open during transfers. Match Pattern/Kit channels in Settings with the TR-8S. Enable Rx/Tx Edit Data and Program Change as needed.
MIDI routing
Match Pattern Ch / Kit Ch on TR-8S. Enable Tx Prog Chg for follow, Rx Prog Chg for Select.