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.”

The Homecoming Concert just a day away, NBC has added a string of A-list performers to the lineup. Cher, Dave Grohl, Ms. Lauryn Hill, Snoop Dogg, St. Vincent and Wyclef Jean will all be joining the fun at New York City's Radio City Music Hall on Friday night (Feb.

Cheri Oteri tells Jenna Bush Hager on the TODAY show that Snoop Dogg asked her if his cousins could be in a "Saturday Night Live" sketch about Barbara Walters.

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