The western movie "McCabe and Mrs. Miller" features the music of Leonard Cohen. I'm quite grateful to that movie for turning me on to Mr Cohen when I was 15. It was the first time I ever waited through the credits for the music credits (why are they always so near the end?). This is something I do all the time now.
As for as anachronism is concerned, even The Bard was guilty, note the clock striking the hour in Julius Caesar.