Around the same time as the folks at NASA were faking the moon landing with a little help from Stanley Kubrick (sarcasm) the mighty Led Zeppelin was becoming one of the world's most popular rock bands.
A few years later (1973 to be exact) Led Zeppelin started making a movie called The Song Remains The Same that supposedly contained live concert footage from the band's three night gig at Madison Square Gardens.
Only that was a great big lie, because while the band did play three consecutive sold out shows at the Garden in July of 1973, and director Joe Massat was there filming the show, his footage turned out to be mostly unusable and he was fired.
New director Peter Clifton came on board and discovered Massat's footage couldn't be properly synced to sound or edited so he decided to reshoot the live footage, in the same running order, at Shepperton studio in Surrey, England.
It's pretty easy to tell which parts were reshot when you watch the film armed with this knowledge, but Jimmy Page didn't actually reveal this secret reshoot until he was interviewed by Uncut magazine in 2008:
“I’m sort of miming at Shepperton to what I’d played at Madison Square Garden, but of course, although I’ve got a rough approximation of what I was playing from night to night, it’s not exact. So the film that came out in the ‘70s is a bit warts-and-all.”