One of the strangest films ever made came out in 1975. It was WWII footage matched to Beatles songs sung by some of the big names of the day like Elton John, Rod Stewart, Helen Reddy, Billy Preston, etc. The music is pretty good, of course but it’s a very odd mash up. I hated it at the time but I find it kind of compelling now.
It made almost no money at the time. It as gone from the theaters in a week. But you might find it an interesting experience.
This is the entire film.