Shifting One Octave Up Or Down (Octave) - Roland VP-550 Owner's Manual

Shifting one octave up or down
You can shift the pitch of the keyboard higher or lower by one octave.
Shifting one octave upward
1.
Press the [UP] button; the button will light and the keyboard will
shift upward one octave.
Press the [DOWN] button to return to the original pitch.
Shifting one octave downward
1.
Press the [DOWN] button; the button will light and the keyboard will
shift downward one octave.
Press the [UP] button to return to the original pitch.
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Pressing the [OCTAVE] buttons won't change the range of the Bass & Percussion part.
(OCTAVE)