Another Mad Magazine cartoon - actually a two-fer. They had a special rock-themed issue back in the 1970s, and it came with a two-sided poster by Don Martin. (I searched the thread and didn't find any references to this - apologies if it duplicates an uncaptioned post.)
And I recently discovered Todd Loren’s Rock N Roll Comics from the early 90s - generated some controversy by being unauthorized - and Loren was killed under suspicious circumstances which pretty much ended the series.