Paul McCartney was the first of the Beatles to work on an extracurricular recording project (the soundtrack to the 1966 film The Family Way) and also the first to release a bonafide solo album of songs (McCartney, which appeared as the Beatles were dissolving in 1970). McCartney has been the most prolific ex-Beatle and has also enjoyed the greatest measure of commercial success. Between his work with the Beatles and as a solo artist and leader of Wings, McCartney has written or cowritten more than 50 Top Ten singles.
