The history of the wah wah pedal. This is excellent. “‘Cry Baby: The Pedal That Rocks The World’ tells the story of the wah wah effect pedal, from its invention in 1966 to the present day. Musicians, engineers, and historians discuss the impact of the pedal on popular music and demonstrate the various ways it has been used, as well as how its evolution has improved the ability of artists to express themselves musically.”

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