The day the music died

Also known as the most tragic day in rock and roll history, the day the music died refers to the plane crash that killed rising stars Buddy Holly, Ritchie Valens and J.P. Richardson AKA The Big Bopper while they were on tour. A tour where everything that could go wrong, did in fact go wrong. But how did they end up on the tour from hell? What really happened on that plane? Are the conspiracy theories behind the crash true?