Use the following procedure to fatten the sound:
1. Select Piano 1-1 by pressing the PIANO button.
2. Press the FAT button.
3. Playing a note now will actually trigger two notes - the one played and the octave below it.
1. Select Piano 1-1 by pressing the PIANO button.
2. Press the FAT button.
3. Playing a note now will actually trigger two notes - the one played and the octave below it.