There is at least three different rehearsals of PR from 1983 circulating.
One clocks in at 08:17, another one at 13:05 and a third at 09:10. The third one is labeled 03.08.1983.
Do we know the dates for the other rehearsals? At least one of them sounds pretty tentative, with Prince calling out chords.
[Edited 1/24/19 12:19pm]