Yamaha Clavinova CVP-609 Owner's Manual page 56

Fingered
Fingered On
Bass
Full Keyboard
AI Fingered
AI Full
Keyboard
56 CVP-609/605 Owner's Manual
Lets you finger your own chords on the chord section of the
keyboard, while the instrument supplies appropriately orchestrated
rhythm, bass, and chord accompaniment in the selected Style. The
Fingered type recognizes the various chord types which are listed
on the separate Data List booklet and can be looked up using the
Chord Tutor function called up via [Menu] → [ChordTutor].
Accepts the same fingerings as Fingered, but the lowest note played
in the Chord section of the keyboard is used as the bass note,
allowing you to play "on bass" chords. (In the Fingered mode, the
root of the chord is always used as the bass note.)
Detects chords in the entire key range. Chords are detected in a way
similar to Fingered, even if you split the notes between your left and
right hands — for example, playing a bass note with your left hand
and a chord with your right, or by playing a chord with your left
hand and a melody note with your right.
Basically the same as Fingered, with the exception that less than
three notes can be played to indicate the chords (based on the
previously played chord, etc.).
When this advanced fingering type is engaged, the instrument will
automatically create appropriate accompaniment while you play
just about anything, anywhere on the keyboard using both hands.
You don't have to worry about specifying the Style chords. Although
the AI Full Keyboard type is designed to work with many songs,
some arrangements may not be suitable for use with this feature.
This type is similar to Full Keyboard, with the exception that less
than three notes can be played to indicate the chords (based on the
previously played chord, etc.). 9th, 11th and 13th chords cannot be
played. This type is available only for Style playback.