I am reminded of the last track on Information Society's[1] 1992 album "Peace and Love, Inc.", which was a recording of a 300 baud modem encoding an ASCII text message[2]. Their debut album, "Information Society"[3], used the somewhat obscure "CD+G" format, which included graphics that could be displayed by compatible players.
Aphex Twin did something similar on "2 Remixes by AFX." [1] There was an SSTV image [2] encoded into one of the tracks. It's basically some calibration header tones followed by FM. For a little while, I didn't know it was data and just thought it was Richard doing his thing :)
The box set for David Bowie's Sound + Vision album included a fourth CD that included an extra video track in addition to three regular CD audio tracks.
[1] https://en.wikipedia.org/wiki/Information_Society_(band)
[2] http://www.textfiles.com/humor/is_story.txt
[3] https://www.youtube.com/watch?v=gmYPQq7JcEg