B.B. King is in his late 80s, but the King of Blues is still on stage with his band and his famous guitar Lucille more than 100 nights a year -- a tour schedule that would tax many artists a quarter of his age. He's without a doubt the most well-known and successful living blues artist in the world. A Mississippi native, Riley B. King first built his reputation while working as a DJ, guitarist and jingle writer at the legendary radio station WDIA in Memphis, where he was known as "Blues Boy King" -- a nickname that was later shortened to B.B. He recorded his first album in 1949, and has released more than 50 albums since that have yielded popular songs like "The Thrill is Gone," "Three O'Clock Blues," and "You Upset Me Baby." King, a 1987 inductee into the Rock and Roll Hall of Fame, is known for his precise and sparse guitar style in which he plays individual strings instead of chords, coaxing his unmistakable sound by bending and holding notes. Today he plays concerts sitting down because of his diabetic condition, but that doesn't stop fans from scooping up tickets to see this still-vital living legend who influenced guitarists ranging from Jimi Hendrix and Eric Clapton to John Mayer and Derek Trucks.