2 weeks ago, Dave Grohl uploaded a 40-second trailer on YouTube. It probably got you all confused, but it’s actually about his mini documentary entitled PLAY, that features 2 things: musicians who are all about chasing new challenges, & Grohl jamming with, well…Grohl himself.

It’s always going to be a puzzle, It’s always going to be a challenge. It’s a beautiful mystery,” Dave Grohl says in the opening of the documentary.

Play is directed by the Foo Fighters frontman with the help of Sound City/Sonic Highways collaborator Mark Monroe.

Grohl played a 23-minute long original composition—all by using seven different instruments by himself. The results? Incredible.

Watch his documentary in full: