J Mascis,
Kevin Shields and more discuss the art of the guitar pedal in a new documentary.
The Pedal Movie was pieced together by online guitar marketplace Reverb, and traces the evolution of the humble guitar pedal.
Opening with the accidental invention of the fuzz effects - famously developed by musicians slashing their amps with a razor - it moves through the wah-wah pedal, reverb, and more.
Some fantastic guitarists contribute to the new documentary, which is out now, including Dinosaur Jr. wizard J Mascis.
Kevin Shields also contributes, with the likes of Billy Corgan, Graham Coxon, Steve Albini, and more adding their two cents.