Yamaha RY9 Owner's Manual page 50

SELECTING A FUNCTION - Hold [MODE] and press [PAGE+] and [PAGE-] to
step through the various functions. The LCD will display information about
the status of each function as you step through them.
SELECTING A SONG - When you enter Song Play Mode, you can go ahead
and select a song. Other wise, you must position the flashing cursor over
the word "SONG" by pressing [ E ]. Then, press [+1] and [-1] to select a
Preset (#00 ~ #49) or User (#50 ~ #99) song, or the Demo song. (While
the song is stopped, you can press [ E ] and [ F ] to position the flashing
cursor over the song number, backing name or pattern number.)
STARTING AND STOPPING THE SONG PLAYBACK - Press [PLAY] to start
the song playback. Press [STOP] to stop the song playback. Pressing [PLAY]
again will continue the song playback from the stop position.
DESIGNATING THE SONG START MEASURE - When the song playback is
stopped, press [TOP] to designate the top of the song, or press [BWD] or
[FWD] to designate a particular measure. Then, pressing [PLAY] will start
the song playback from the designated measure.
To step through each measure one-by-one, press [BWD] or [FWD] once or more. To scroll through a
series of measures, press and hold [FWD] or [BWD], respectively.
CHANGING THE BACKING - To temporarily select a different backing to hear
how it sounds with the current rhythm pattern (even while the song is
playing), press [ E ] or [ F ] to position the flashing cursor over the backing
name. Then press [+1] and [-1] to select one of the 200 backing
accompaniments. The very last selection on the list is "BKOFF", which lets
you turn the backing off.
The patterns, number 192 through 199, don't contain bass and chord data.
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