June 18 is the birthday of Paul McCartney, a largely self-taught musician. Guinness World Records has called McCartney the "most successful composer and recording artist of all time." He is credited with with 60 gold discs and sales of more than 100 million albums and 100 million singles. More than 2,200 artists have covered his Beatles song "Yesterday ,” more than any other song in history. He has written or co-written 32 songs that have reached No. 1 on the Billboard Hot 100. McCartney's earliest musical influences include Little Richard, Elvis Presley, Buddy Holly, Carl Perkins, and Chuck Berry. He has singled out Little Richard as an idol, whose falsetto vocalizations inspired McCartney's own vocal technique.