The wah-wah pedal makes a guitar sound as though it's singing "wah, wah, wah." The effect was a staple of 1960s psychedelic rock: Jimi Hendrix bent reality with it in classics like "Voodoo Child ...
Metallica guitarist Kirk Hammett‘s love of the wah-wah pedal is legendary. So it was no act of bravery for him to agree to a wah-wah duel with challenger Mrs. Smith, the beehived comic actress/guitar ...