Akai MPC X User Manual page 151

The Generate Random Events function creates random
melodic or drum patterns on the current MIDI track.
To select the type of events you want to create, use
the Event Type field to select Drum Events or
Melodic Events.
To select how the events will be created relative to
the existing events on the track, use the Replace
field:
Replace All Events: Select this option to replace all
events on the track with the randomly generated
ones.
Replace Events in Note Range: Select this option
to replace all events in the designated note range
on the track with the randomly generated ones.
Use the Bank or Start Pad and End Pad menus
to set the note range for drum events or the Start
Note and End Note menus to set the note range
for melodic events.
Add to Existing Events: Select this option to add
the randomly generated events to the track
without replacing or overwriting the existing ones.
To set how many bars the events will use, use the
Pattern Size (Bars) field. The highest possible value
is the number of bars in the current sequence.
To select the duration of the events, use the Note
Length field. (This feature is nonfunctional if Legato
is enabled while generating melodic events.)
To generate the events and keep this window open,
tap Apply.
To generate the events and close the window, tap
Do It.
To close the window without generating any events,
tap Close.
If Event Type is set to Drum Events:
To select the pad bank that will be used to
generate the events, use the Bank field or select
Range to use the Start Pad and End Pad menus
to define a specific pad range instead.
To define a specific pad range over which the
events will be generated, use the Start Pad or
End Pad fields. You can use these fields only if
the Bank menu is set to Range.
To set how closely together the events will be
placed in the track, use the Density (%) slider.
To set how widely or narrowly the rhythmic
patterns of the generated notes vary, use the
Rhythm Variation slider.
151