Waylon Jennings was a pioneer of 'Outlaw Country,' a movement that rejected the polished 'Nashville Sound' in favor of a raw, rock-influenced style. Jennings fought for and won artistic control over his music, allowing him to choose his own songs and musicians. His 1976 compilation album 'Wanted! The Outlaws' (with Willie Nelson and Jessi Colter) was the first country album to sell a million copies. Jennings had a rugged bass-baritone voice and a signature 'phase shifter' guitar sound. He was also famously a member of Buddy Holly's band and gave up his seat on the ill-fated plane that crashed on 'The Day the Music Died.' His rebellious spirit and hits like 'Luckenbach, Texas' and 'Mammas Don't Let Your Babies Grow Up to Be Cowboys' made him a legend who changed the face of country music.