That'll Be The Day (click to listen) that he was inspired to write after watching a John Wayne movie called The Searchers where he often said that phrase. I also like Linda Ronstadt's (the cover queen) version of it.Here is another one of his songs called
After a year and half of success, he died in a plane crash along with Richie Valens and The Big Bopper. Don McLean wrote a song about their demise called American Pie.
Thanks for listening!