Cry Baby: The Pedal that Rocks the World

A small metal box with a rocking pedal becomes the unlikely protagonist of modern music. This documentary traces the journey of the iconic wah-wah effect pedal from its 1966 invention to its status as a sonic revolution. Through interviews with inventor Brad Plunkett and guitar legends like Eddie Van Halen, Slash, and Buddy Guy, the film explores how this simple circuit transcended its novelty origins. Engineers and historians detail its technical evolution, while musicians demonstrate its expressive power, showing how the wah-wah pedal carved its crying, vocal-like sound into the fabric of funk, blues, and rock, forever altering musical expression.