Soundgarden frontman Chris Cornell will join The Avett Brothers during their September 30 performance on Late Night with Jimmy Fallon. In anticipation of their forthcoming album, Magpie and the Dandelion, The Avetts performed on Fallon last night and will also be taping a PBS special in New York City tonight.

Magpie and the Dandelion hits stores October 15 and is available for preorder now. Check out “Another is Waiting” from Late Night last night.