I found this private comment on Discogs about a CD reissue of a vinyl album with a faster speed--
".. in the early 1980s it was with some artists, labels or genres, common to modify the speed of the tape for sound or commercial purposes".
Was it really so common? I remember some tracks playing from vinyl with a slightly different speed, but I always thought it was due to the age and technical condition of the turntable, not the producer trick.
Did you experience that on any scale??? Examples??