Patsy Cline, Richie Valens (with Buddy Holly and the Big Bopper).
They make no allowance for weather as my mom-in-law said, and she was right. The show must go on.
John Denver also.
Waylon Jennings was supposed to be on that plane but gave up his seat to the Big Bopper who was sick.
Otis Redding, the Barkays
Bill Chase
You might be too young to know ... But a biggie http://en.m.wikipedia.org/wiki/Bill_Graham_(promoter)