What the fuck happened to Spring?
Except that they both precede and resemble The Clash, and have "Rock" in their titles, there is no connection between these songs.
I can't believe the Clash didn't absorb the 101ers "Letsgetabitarockin'". At the very least it deserved a spot on their set list, and would have been quite at home on either "London Calling" or "Sandanista!".
At about the same time Roger McGuinn recorded "Rock N Roll Time" for his 1976 "Cardiff Rose" album. Written by McGuinn with Kris Kristofferson, and Bobby Neuwirth, and produced by Mick Ronson, who also played guitar, it seems to predict the Clash's sound, and would have fit better on "Give'em Enough Rope" than it did on Roger's album.
While I love "Letsgatbitarockin'", I think of "Rock N Roll Time" time as a curiosity. It took a lot of writing muscle to squeeze out a fairly mediocre song. A rich guys "rebellion".
I bought "Cardiff Rose" when it came out, largely because of Mick Ronson, and was kind of disappointed. It's not a great record. The really good tracks on it are covers: Joni's "Dreamland", and Bob's "Up To Me".