This is same as the features in O2jam using rings, this will prevent some memorizing of notes to be hit.
Randomize Option 1 Example:
(6k)All 'S' key notes must swap with 'F' key notes.
Randomize Option 2 Example:
One 'S' key note may change sometimes to 'D' key note or in 'Space' key note
Randomize Option 1 Example:
(6k)All 'S' key notes must swap with 'F' key notes.
Randomize Option 2 Example:
One 'S' key note may change sometimes to 'D' key note or in 'Space' key note