This is novel. The limited-edition gatefold vinyl release of 'Hexadecagon' by The Octopus Project contains a cut & assemble zoetrope and ten bonus "roulette" tracks that can only be experienced via *analog technology* (ie a record player).
The roulette tracks are bonus songs - all exactly the same length - cut to wax in concentric, interlocked grooves, such that the listener never knows which song is played when the needle is placed on the LP. All ten tracks resolve to the same ending and drop into a single, final locked groove.
Of course this is all a bonus to the standard album, which contains this track.
More at peekaboorecords.com.