This is more pre-Zeppelin history.
Today in 1967 saw the London premiere of the film Blow Up. The film is about a successful mod photographer in London whose world is bounded by fashion, pop music, marijuana, and easy sex. He meets a mysterious beauty, and also notices something frightfully suspicious on one of his photographs of her taken in a park. The fact that he may have inadvertently photographed a murder does not occur to him until he studies and then blows up his negatives.
The pre-Zeppelin relevance? The movie has a scene with the Yardbirds in it. The photographer stumbles into a mod club where the Yardbirds are playing. This was actually during the brief period in 1966 when both Jimmy Page and Jeff Beck were in the band, and both are on stage together. The fans stare blankly like robots while the Yardbirds do “Stroll On,” a not-too-subtle rip-off of “Train Kept A-Rollin”. But when Beck gets mad at his equipment and smashes his guitar, it unleashes a frenzy of mob violence.
Link to the footage: https://www.youtube.com/watch?v=P3d_UOgHYbw