SNL 40: Watch Justin Timberlake Rap The History Of SNL, Taylor Swift Act In “The Californians,” Miley Cyrus Cover Paul Simon, Kanye West Sing “Wolves” & Appear In “Wayne’s World”

Saturday Night Live’s 40th anniversary celebration is going on right now, and pretty much every famous person ever is there. Notable musicians in attendance include Paul McCartney, Kanye West, Win Butler, Taylor Swift, Jack White, Paul Simon, Justin Timberlake (along with the rest of N*SYNC), Bon Jovi, Elvis Costello, Debbie Harry, Miley Cyrus, and a whole bunch more. Some of them are even giving performances! The night opened with Justin Timberlake and Jimmy Fallon doing a rap rundown of some of the most popular SNL jokes. Watch below.

Right before the show began, Kanye jokingly interrupted the red carpet broadcast:

Kanye at SNL 40 lmao #snl40 #kanyewest

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Many other musicians were spotted on the red carpet…

@taylorswift on the #SNL40 red carpet.

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Dave Chappelle in the flesh. #snl40 #history

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Paul McCartney and Paul Simon sang “I’ve Just Seen A Face” during Steve Martin’s monologue, which also featured Tom Hanks, Melissa McCarthy, Peyton Manning, Billy Crystal, Miley Cyrus, Chris Rock, and Alec Baldwin.

McCartney later returned to perform “Maybe I’m Amazed” with the band. He was introduced by Keith Richards.

Taylor Swift appeared in “The Califorians.” She comes in at 5m15s in the clip below.

Maya Rudolph reprised her Beyoncé impression and Joe Piscopo did his Frank Sinatra.

Miley Cyrus covered Paul Simon’s “50 Ways To Leave Your Lover” (with Fred Armisen on tambourine). She was introduced by Win Butler and Candice Bergen.

Will Ferrell and Ana Gasteyer’s Marty & Bobbi Culp sang Mark Ronson & Bruno Mars’ “Uptown Funk.”

Lying flat on the stage floor, Kanye sang a medley of “Jesus Walks,” “Only One,” and new song “Wolves” with guests Sia and Vic Mensa.

Iconic television. Kanye SNL.

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He was wearing blue contact lenses.

Mike Myers and Dana Carvey did a bunch of Kanye jokes during an SNL-themed “Wayne’s World,” and Kanye made a cameo.

Andy Samberg and Adam Sandler reunited for a digital short, “That’s When You Break,” about giggling cast members breaking character on the live show. Chris Parnell and Bill Hader appeared:

And Jack White introduced Paul Simon, who sang “Still Crazy After All These Years” to close out the night.

UPDATE: At the afterparty, McCartney, Fallon, Swift and Blues Brothers Dan Aykroyd and Jim Belushi played “I Saw Her Standing There” and “Shake It Off.”

#SNL40afterparty #taylorswift

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Haim sang with Prince…

Dude….this really really really really happened #O!!!!!!!!!! #SNL40 #SNL40afterparty

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Caption this #snl40

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The B-52s were there, too.

Swift made a new fan.