Last year, "Saturday Night Live" celebrated its 40th anniversary with the all-star "SNL 40" special. After the show ended, a star-studded afterparty took place that featured an extensive jam session. When Jimmy Fallon talked about it on the next night's "Tonight Show" (below at 7:17), he revealed that Prince performed. (Dave Chappelle apparently encouraged Fallon to invite him up.) Footage from that party has finally surfaced thanks to former "SNL" cast member Tim Kazurinsky. It features Prince and 3rdEyeGirl performing "Let's Go Crazy" on a stage alongside Fallon, Haim, Chris Rock, Maya Rudolph, Martin Short, Bill Murray, Cuba Gooding Jr., Emma Stone, and many others. He opened by saying, "Dearly inebriated." Watch it happen below. Update (4/24, 10:00 a.m. EST): Last night, "Saturday Night Live" ran a special in tribute to Prince. "Goodnight Sweet Prince" featured more footage of Prince performing at the afterparty—watch it below.

Prince was found dead at his Paisley Park estate in Chanhassen, Minnesota on Thursday. He was 57. Support has poured out from across the musical community.