Lady Gaga Joins U2 on Stage at Madison Square Garden

Lady Gaga and U2 - H 2015

The two teamed up on "Ordinary Love," U2's contribution to the 'Mandela: Long Walk to Freedom' soundtrack.

U2’s epic eight-night stand at the Madison Square Garden has become something of a celebrity parade, with stars filling the stage and the seats.

Sunday night was no different, with Lady Gaga joining the Irish rock legends for a surprise collaboration.

Gaga joined U2 for a performance of “Ordinary Love,” the band’s contribution to the soundtrack for the 2013 Nelson Mandela biopic Mandela: Long Walk To Freedom. The pop singer dueted with Bono and played piano.

U2’s residency thus far has been attended by the likes of musicians Sir Paul McCartney, Nile Rodgers, Alicia Keys and Jon Bon Jovi, producer Steve Lillywhite and model Christy Turlington and filmmaker Steven Soderbergh, while Jimmy Fallon and The Roots have shared the spotlight with the veteran act.

Watch U2 and Lady Gaga’s performance below.

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