Musicians, it seems, have always wanted to alter the sounds of their instruments. Over the course of centuries, strings have been added to guitars for a fuller sound. The composition of those strings ...

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 ...

A version of this piece orginally appeared on The Week. Jimi Hendrix making his guitar "talk." Peter Tarnoff/Retna Ltd./Corbis The wah-wah pedal makes a guitar sound as though it's singing "wah, wah, ...

A group of former Purdue University students is trying to patent and license the “Ghost Pedal,” which uses sensors to detect the position of a guitarist’s foot and simulate a physical wah pedal based ...