Considering he’s been a late night host for over three decades, surely David Letterman wants to go out with a bang. Though he announced the retirement news last year, Letterman only recently officially set the date for his last appearance for Wednesday, 5/20.

He’s lined up a slew of special guests for the final few weeks including the Avett Brothers and Brandi Carlile, Dave Matthews Band, Emmylou Harris, Norah Jones, Mumford & Sons, Ralph Stanley and Amos Lee, Asleep At The Wheel, Chris Stapleton, Iron & Wine and Ben Bridwell, John Mayer, Elvis Costello, and Tom Waits.

It hasn’t been specified, but it seems likely that Waits and Costello will be some of the very final musical guests on the show. Iron & Wine and Ben Bridwell will be on the show this Wednesday, 4/15 and John Mayer will appear on Friday, 4/17.

UPDATE: Waits will perform and be interviewed on 5/14.

[Photo via The Late Show’s Facebook.]