Muzik for Insomniaks (Series)

Muzik for Insomniaks is a series of albums released by Mark Mothersbaugh in the 1980s. The series only has two 'main' albums, released by Engima in 1988, but there exist other entries, mostly containing music from the Enigma albums, plus additional material.
== Releases ==
1981 Enigma Cassette
* The 1981 Cassette, dubbed Muzik for Insomniaks volume 1, contains 14 tracks, identical to the ones featured in the 1988 CD.https://www.discogs.com/Mark-Mothersbaugh-Muzik-for-Insomniaks-volume-1/release/13816497
1985 Tra-Comics Cassette
* The 1985 cassette release features 8 tracks, 6 of which previously appeared on the 1981 Cassette. It features one track not on the original album, XP33, which replaced the track XP39. 
1988 Enigma CD Volume 1
* The 1988 CD is identical to the 1981 Cassette. 
1988 Enigma CD Volume 2
* This 1988 CD features entirely new music
1990 Diagrapho Cassette # 1
* Re-issue of the 1985 Cassette
1990 Diagrapho Cassette # 2
* This 1990 Cassette features selections of tracks from both of the 1988 CDs.
1990 Diagrapho Cassettte # 3
* This features selections from the second 1988 CD, plus one track from volume 1.