Yamaha KX25 Owner's Manual page 22

Using the KX with Cubase
In this way you can play different rhythms from the
same Arpeggio type simply by playing just a few
notes. In fact, you can create the rhythmic basis for
a complete song by letting each rhythm repeat for
several measures and changing patterns as
desired. Each of the Arpeggio types in the Category
"DrPc" (selected with the default initial setting)
features four different rhythm patterns recorded
respectively to four different tracks. Each of these
patterns is assigned to a specific area of the
keyboard. You can call up the desired pattern by
pressing any note in a specific area, as shown
below.
For these "DrPc" (Drum/Percussion) Arpeggio
types, the keyboard of the KX is divided into four
six-note groups, each group having a different
rhythm pattern. The note ranges of these four
groups are: C – F, F# – B, C – F, F# – B...and so on,
repeating up the keyboard. Playing any note in the
group will trigger the assigned Arpeggio/rhythm
pattern.
On the KX61, for example, the rhythm patterns are
assigned to note groups like this:
C1 – F1 : Track 1 rhythm pattern
F#1 – B1 : Track 2 rhythm pattern
C2 – F2 : Track 3 rhythm pattern
F#2 – B2 : Track 4 rhythm pattern
C3 – F3 : Track 1 rhythm pattern
(...and so on up the keyboard.)
Each note on the keyboard has a note name
NOTE
like C3, D3, and E3 according to the octave.
This octave setting can be shifted by using
the [OCTAVE] buttons. For details, see
page 27.
22 Owner's Manual