Fred Armisen is taking a couple nights off from his regular gig leading Late Night with Seth Meyers‘s 8G Band next week. Sitting in as his temporary replacement for August 11 and 12 will be Annie Clark, a.k.a. St. Vincent.

The band has had a number of guests join them in the few months it’s been around, including alt-rock guitar heroes J Mascis of Dinosaur Jr. and Susanna Hoffs of the Bangles, but Clark will be the first to actually front the band–which includes members of Girls Against Boys and Les Savy Fav–and take on some of Armisen’s responsibilities. The presumably includes selecting songs. Given that in the past she’s covered Nirvana and Big Black, it seems likely that we’ll be hearing some choice ’90s indie cuts, but Clark also likes to keep her audience on their toes, so expect some more unexpected picks.

Here’s St. Vincent covering Nirvana’s “Lithium” at a recent concert in Chicago: