Yamaha SY77 Operating Manual page 185

In addition to LOCATE, the following keys can be
used while the sequencer is stopped to move
backwards and forwards in the song.
Move to the beginning of the song
Move backward one measure (continue press-
ing to move rapidly)
LOCATE Move to a previously set location
Move forward one measure (continue pressing
to move rapidly)
Song edit: Any time in song play mode while the
sequencer is not playing back, you can press
EDIT to edit the song. For details refer to Song
Edit Mode.
Simultaneous note capacity: The SY77 sequencer
can playback up to 32 notes at once. During
playback, any new notes which would exceed
this number will be ignored.
Timing priority: Since track 16 (the pattern track)
will often be used to play rhythm parts, highest
priority is given to playing it on time. Timing
priority is then given to tracks 1,2, ... 15.
SONG MODE
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