OK, more 50's: Fats Domino co-wrote this 1955 breakup tune with Dave Bartholomew. It topped the R&B charts and peaked at #10 Pop. Pat Boone's cover later on that year topped the white Pop charts making it THE first bona fide crossover hit. It was Boone's first hit single. Part of the "American Graffiti" ('73) soundtrack and ranked #431 on Rolling Stone's 500 Greatest Songs Of All Time. Legend goes that during a concert Fats Domino invited Pat Boone on stage. He showed a big gold ring and said "Pat Boone bought me this ring."
Yesterday's answer: "Come Monday" by Jimmy Buffett. I've always enjoyed playing the Amaj7/Dmaj7 transition on the bridge - a stroke of songwriting genius! http://www.youtube.com/watch?v=BiYfQSD4Xao