STAGE TUBE: Paul McCartney, Taylor Swift Perform at SNL Anniversary Afterparty

SATURDAY NIGHT LIVE's 40th Anniversary special on NBC last night might have featured some all-star comedy talent - but the after-party had its own unofficial lineup of stars, featuring a former Beatle and a country-turned-pop star. Instagram users recorded a few videos of Paul McCartney and Taylor Swift taking the stage together, which, Entertainment Weekly caught and compiled. Check out a few videos of their perfomance below!

Saturday Night Live's anniversary special had everything: new sketches featuring old friends. Remade classic bits. Crowd-pleasing montages. And more than 20 million viewers. SNL's 40th Anniversay Special is currently NBC's top-rated primetime entertainment telecast, excluding post-Super Bowl programs, in 11 years since Jan. 25, 2004 (8.5 in 18-49, 23.4 million from 7-11 p.m. on the night of the Golden Globes)

"Saturday Night Live," NBC's Emmy Award-winning late-night comedy showcase, enters its 40th season in September for another year of laughs, surprises and great performances.