"Blowup" was released in 1966, and according to the boards at IMDb, the Yardbirds featuring Jeff Beck and Jimmy Page, have a cameo appearance in this.
Other than the discussion of Jimmy Page singing and playing a Telecaster in the movie, a few comments are worthwhile reading: "God Awful Movie," "Austin Powers without the laughs" and one comment claims that this movie greatly influenced Francis and Sofia Coppola.
Blow Up was a bit of a sensational flick at the time with some nudity (Vanessa) and the rock angle....had a tiny cult following.
All about a murder in Hyde Park picked up by accident on film...more or less.
Veraushka lounging..lol