Lady Gaga and Bruno Mars’ “Die with a Smile” marks ten weeks at No. 1 on the Billboard Global Excl U.S. chart, joining an elite group of chart-topping hits.

Cher belted “If I Could Turn Back Time.” Lady Gaga performed her hit “Shallow.” Miley Cyrus sang “Flowers” and Lauryn Hill delighted the crowd with “Killing Me Softly.”

By the time Cher sang "If I Could Turn Back Time," it seemed as if time had indeed been turned back, and every single "Saturday Night Live"

One-time-only collaborations included Bonnie Raitt and Chris Martin. Arcade Fire, David Byrne, Post Malone and Nirvana.

Cher belted “If I Could Turn Back Time.” Lady Gaga performed her hit “Shallow.” Miley Cyrus sang “Flowers” and Lauryn Hill delighted the crowd with “Killing Me Softly.” “SNL50: The

The Homecoming Concert” isn't quite doing that — but the three-hour show boasts a truly epic lineup of performers. Just one of the ways “SNL” is marking its 50th birthday, the show will be hosted by Jimmy Fallon at Radio City Music Hall,