Season's Greetings From "Saturday Night Live"

Even though Chris Kattan, Jimmy Fallon, and Tracy Morgan had all left the cast, Horatio Sanz has one to sing the Christmas song with until Kermit the Frog, Fozzie Bear, Gonzo and Animal all offer to help, having memorized the song after hearing it three times a year for the past four years.

Description from SNL Fandom Wiki, CC BY-SA