Yamaha PSR-12 Product Manual page 15

Advanced course:
Manual Bass accompaniment
If you slide the Auto Bass Chord MODE
selector to the MANUAL BASS
position, you can play your own bass line
by using the 19 keys in the Auto Bass
Chord key section This lets you play
two different voices at the same time,
such as VIBES with your right hand and
BASS with your left. Choose the voice by
using the BASS VOICE selector
Note:
You can play only one note at a time in the Auto
Bass Chord key section when using this function.
Pitch controls
The PITCH function enables you to
fine-tune the keyboard for when you want
to play in an ensemble. Each time
pressed, the pitch increases very slightly,
up to a maximum of 50 cents above the
is pressed, the
preset level. Whenever
pitch drops slightly, also to a maximum of
50 cents.
Notes
1. If you hold down one of the PITCH controls, the
pitch will change continuously.
2. If you press both of the PITCH controls together,
the pitch will return to the preset
level(A =440Hz).
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