J.P. Richardson was also known as the Big Bopper.

Both Waylon Jennings and Tommy Allsup who were forming part of Buddy Hollys' band on the tour, swapped their seats on the ill fated plane with Valens and Richardson.

The song American Pie was written some years later by Don MacLean and released in 1971 and has been covered by many since including Madonna who brought a new era of fans to the song and the story behind it.

More Info: en.m.wikipedia.org