xL by Mystery Tapes etc.

Perhaps the earliest example of what have been called "supercuts" created by Andy Dowden as the soundtrack for the video 'The Heart Shape' in 1982:
https://findingaids.library.dal.ca/informationobject/browse?sort=relevance&creators=794362&collection=781824&topLod=0&sortDir=asc
&
The track appeared on the audio cassette magazine edited by John Oswald, published by MUSICWORKS with issue #24 in the summer of 1983 :
https://musicworksmag.myshopify.com/products/timefields-maritides

X...coined to cover the counter-covert world of converted sound and retrofitted music, where collective melodic memories of the familiar are mined and rehabilitated to a new life. The blatant borrowings of the privateers of sound are a class distinct from common sample pocketing, parroting, and tune thievery.