From last.fm:

B. B. King (b. September 16, 1925 in Itta Bena, Mississippi) is a U.S. blues guitarist and songwriter. He is among the most respected electric guitarists; Rolling Stone magazine ranked him third in its list of the hundred greatest guitarists of all time. Born as Riley B. King, he began broadcasting his music live on a Memphis radio station called WDIA. At first, he used the name The Peptikon Boy on air, which later was changed to The Beale Street Blues Boy, and then further shortened to just Blues Boy or B.B. Read more about B.B. King on Last.fm.