Playing two tones layered on each key (p. 19), Dividing the keyboard for two people (twin piano), Adjusting the song (smf) volume (song volume smf) – Roland F701 88-Key Modern Digital Piano with Stand and Bench (White) User Manual

Page 32: Playing two tones layered on each key, Transposing the pitch of the song playback (song, Transpose), Playing two tones layered on each k ey (p. 19), Convenient functions