Yamaha PSR-75 portatone Product Manual page 8

STYLE
Using the Auto Accomp.
Function/Multi Fingering
The Auto Accomp. function automatically
generates bass and chord accompaniment for
you to play along with, by using Multi
Fingering operation. You can change the
chords of the accompaniment by either using
a "Single Finger" technique in the AUTO
ACCOMP. SECTION of the keyboard –
simply by playing a one-, two- or three-finger
chord indication – or by playing conventional
full "Fingered" chords. The PortaTone auto-
matically "understands" what chord you
indicate and then generates the accompani-
ment.
Though this operation is automatic, you can
set Auto Accomp. to function exclusively in
either the Single Finger or Fingered mode.
To set Auto Accomp. to "Single Finger,"
turn the power off, then hold down the "1"
key on the Numeric Keypad and simultane-
ously turn the power on.
Note:
In Single Finger, the AUTO ACCOMP. SECTION is set
between the C1 key (the lowest key) and the C#2 key.
To set Auto Accomp. to "Fingered," follow
the same steps, holding down the "0" key
instead.
To switch back to Multi Fingering opera-
tion, simply turn the power off and on again.
Single Finger Chords
Chords that can be produced in Single Finger
operation are major, minor, seventh and
minor seventh. The illustration below shows
how to produce the four chord types. (The
key of C is used as an example; other keys
follow the same rules.)
Note:
The "black key" keys follow the same rules; for example, Bb7
could be played as Bb and A (the white key to the left of it).
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