Check out this cool documentary about one of the most influential gadgets on modern guitar: The Wah Wah pedal.

This is one of those things that’d you’d never really think about until something like this is presented to you. Think about how important this invention is/was. The entire sound of rock and guitar in general was changed forever because of this pivotal gadget.

Hey, and who doesn’t like a free movie? Free…and educational.

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