Amy Poehler and Jack Black Sing Classic Bette Midler TuneDespite the get-up and her usual comic presence, she began the song in earnest before Black joined in.
Die Antwoord, Kids in the Hall, Amy Poehler Lead Tenacious D's 2015 Festival Supreme LineupAubrey Plaza, Dan Deacon and Kristen Schaal are also slated for this year's comedy and music festival mash-up.
Watch Jimmy Fallon and Jack Black Redo Extreme's 'More Than Words' Video for Some ReasonDid we just witness the origin of rock's hottest new duo, Black Fallon?
(WATCH): Jimmy Fallon And Jack Black Remake Exteme's 'More Than Words' VideoShot-by-big hair-shot
When Bowie Met Bing: 'The Little Drummer Boy/Peace On Earth'
Must See Idol Performance: Jack Black and Casey Abrams!