Yamaha Electone EL-87 Owner's Manual page 80

8
Press the CUSTOMPLAY button to start recording
of the new part or parts. (Upper part.)
Playback of the previously recorded parts starts
immediately.
The CUSTOM PLAY button is used here to record
only the parts that have been selected for recording,
and play back only those parts that have been selected
for playback. Since registration data has already
been recorded with the first parts of the song,
recording begins immediately.
While you listen to the parts being played back, start
playing the melody on the Upper keyboard.
When the end of the recorded performance is
reached, playback is automatically stopped and the
STOP status is resumed.
76
N O T E :
The CUSTOM PLAY button is used to record or play
back the specified track(s).
N O T E :
The length of a subesquently recorded part cannot
exceed the length of the previously recorded parts. If
you want to change the song length, first delete the
exisiting song (see Song Delete on page 84) and record
again.