Use the Ultrabeat swing function in MainStage
Swing changes the distance between notes. Only even-numbered steps are affected by the Swing parameter, with notes on odd-numbered steps remaining where they are.
Which beats are affected depends on the selected Resolution parameter setting, as illustrated in the following example At a Resolution of 1/8 and a Length of 8, the notes on steps 1, 3, 5, and 7 represent quarter notes in the measure. These remain unchanged. Only the eighth notes found between them (steps 2, 4, and so on) are shifted by the Swing function. The amount of shift is equal to the swing intensity (set with the Swing knob).
Note: Swing is active only for grid resolutions of 1/8 and 1/16. See Ultrabeat pattern controls.
Use the swing function
In MainStage, click the Swing Enable button.
This forces the grid of the currently selected sound to be played in accordance with the Swing knob setting.
Adjust the Swing knob.
At a zero setting (full left position), the Swing function is disabled. Rotate the knob to the right to move affected notes toward the following note.