Call it the Dr. Horrible follow-up you didn't see coming. Joss Whedon's next musical project has nothing to do with Dollhouse and is happening sooner than you may think. Like, next month sooner.

Whedon will be providing "a special musical performance" for an already-special episode of Ira Glass' This American Life on April 23rd. The episode - based around the theme of "Return to the Scene of the Crime" - will also feature contributions from TAL regulars Dan Savage, David Rakoff and Acme Novelty Library's Chris Ware, and be simultaneously broadcast to over 400 movie theaters and art centers around the US. No news, yet, as to exactly what Whedon's performance will entail, but we're hopeful for an appearance by Dr. Horrible co-writers Jed Whedon and Maurissa Tancharoen, we have to admit.

"This American Life," the Joss Whedon musical — live! [Variety]