I have never played a Technics but yes changing the control data in real time it can be done in Korg i30. In i30 after recording just playback all the tracks and choose to record the control data only and record real time changes in chords, volume sliders, and fill in changes, style changes and so on..it just does not mess up your original recording rather you can change number of things and you can undo it all if you do not like it..my question is there a similar control in PSR2000?