Sir James Paul McCartney is an English singer, songwriter, musician, and record and film producer who gained worldwide fame as co-lead vocalist, co-songwriter, and bassist for the Beatles. One of the most successful composers and performers of all time, he is known for his melodic approach to bass-playing, his versatile and wide tenor vocal range, and his musical eclecticism, exploring styles ranging from pre-rock 'n' roll pop to classical and electronica. His songwriting partnership with John Lennon remains the most successful in history.