Last night (Sept. 15), the Foo Fighters debuted an instrumental version of one of their brand new songs.

Called 'Outside,' the Foos performed the track at the Islington Assembly Hall in London. They didn't just play the song outright though -- they stuck it in the middle of one of their biggest singles, 'The Pretender'. You can watch the video above.

The new tune will be featured on their forthcoming album, 'Sonic Highways,' which is due out Nov. 10 via Roswell Records.

The record's release will be paired with the airing of an HBO special of the same name which will document the band's recording process across eight different American studios (one studio per song). You can watch the show's trailer below: