A Wah Pedal is an effects pedal used primarily by guitarists to create a distinctive sound. It alters the tone and frequencies of the instrument, producing a "crying" or "singing" effect. The pedal is activated by a foot-operated lever that sweeps through different frequencies, allowing musicians to emphasize certain notes or create dynamic sounds. Originally popularized in the 1960s, the Wah Pedal has been used by many famous guitarists, including Jimi Hendrix and Eric Clapton. It can be used in various music genres, from rock to funk, making it a versatile tool for enhancing a guitarist's performance.