One could also mention the Birotron. It was a mellotron-type instrument that Rick Wakeman had in the mid-seventies, but instead of the Mellotron strips of rewin

One could also mention the Birotron. It was a mellotron-type instrument that Rick Wakeman had in the mid-seventies, but instead of the Mellotron strips of rewindable tape, it used 8-track tape housings to hold its tape. The members of Yes are said to have pranked Rick one day, by swapping out all the tapes for commercial 8-tracks, so when he began to play it was a cacophony of pop songs overlaid onto each other, rather than the appropriate sounds. It's said that Wakeman was quite cross :) (the instrument is heard on Tangerine Dream's album Force Majeure: strings and male choir https://www.youtube.com/watch?v=Afqgm3CzzQY https://www.youtube.com/watch?v=Afqgm3CzzQY )