Foo Fighters frontman Dave Grohl has gone ahead and recorded the odd musical experiment he’s been talking about in recent interviews, a 25-minute instrumental piece recorded live in which Grohl played every instrument and literally ran from one instrument to the next.

Grohl revealed in an interview with the Chicago Tribune that not only did he record the track, but filmed the entire thing. Grohl said about the project, “When people would ask me, ‘Why are you doing this?’ I’m always like, ‘I don’t know. Because I’ve never done it before?'”

He added, “It’s just the challenge of doing something new. That becomes your engine after a while. Because the last thing you want to get caught in is extreme monotony. So you try to jam every show a little bit differently and you try to make your albums a little bit differently.”