On SNL, Paul McCartney performs the lead single from his new album, his 1973 hit with Wings, and then makes a surprise encore.

On SNL, Paul McCartney performs the lead single from his new album, his 1973 hit with Wings, and then makes a surprise encore.

The season finale of 'SNL' had Paul McCartney playing three songs, in addition to getting monologue and sketch screen time, Saturday night (May 16).