Roland AT900 Music Atelier Owner's Manual page 171

The Rec/Play screen appears.
fig.07-04-2.eps
All accompaniment data is grouped to the "Accmp" track
button in the Rec/Play screen. In the same manner, the
rhythm performance data is grouped to "Rhythm."
If you want to mute only a portion of the rhythms or
accompaniment, open up the Track Mute screen, and switch
off the Track Mute buttons there (p. 170).
5.
Press a track button that is lit, extinguishing
the button.
When you play back the performance, track buttons that
are not lighted will be muted (silenced).
fig.07-14-3.eps
6.
Press the track button once again (button
lights).
The part that had been muted will return to normal and
will be heard.
Recording/Playing Back What You Play
Correspondence Between Track Buttons and
Track Mute Buttons When Playing Back
Commercial SMF Music Files
Track button
Rhythm 10
Accmp 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16
Bass 2
Lower 3
Upper 4
Solo 1
Correspondence Between Track Buttons and
Track Mute Buttons When Playing Back
Performance Data Created with an Music
ATELIER
Track button
10, 11 (Drums/SFX),
Rhythm
13 (Manual Percussion)
Accmp 5, 6, 7, 8, 9, 12, 14, 15
Bass 2 (Bass)
Lower 3 (Lower)
Upper 4 (Upper)
Solo 1 (Solo)
Channel
Track Mute button
169