Akai MPC User Manual page 78

For Drum Programs, the left column shows you all available pads in a vertical view with their
corresponding data.
For Keygroup Programs, Plugin Programs, and MIDI Programs, the left column shows a vertical "piano
roll" keyboard.
Use the vertical window scroll bar right of the grid windows to move up and down. Under the scroll bar
is a slider that can adjust the "vertical zoom." Below the grid is a similar scroll bar and slider for
horizontal scrolling and zooming.
Hardware: To zoom vertically, press and hold the Shift button and use the up and down Cursor
Buttons. To zoom horizontally, press and hold the Shift button and use the left and right Cursor
Buttons.
For Drum Programs, click a pad name to hear it in the Program. For Keygroup Programs, Plugin
Programs, and MIDI Programs, click a key to hear that note in the Program.
Mute a pad by clicking its mute (M) button in the left column.
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