premise: Carlos Santana was known.
hypothesis: Carlos Santana ( born July 20 , 1947 ) is a Mexican and American musician who first became famous in the late 1960s and early 1970s with his band , Santana , which pioneered a fusion of rock and Latin American music . In 2003 Rolling Stone magazine listed Santana at number 20 on their list of the 100 Greatest Guitarists of All Time .