The pedal steel guitar is a console steel guitar with pedals and knee levers that change the pitch of certain strings, enabling more varied and complex music to be played than with other steel guitar designs. Like all steel guitars, it can play unlimited glissandi (sliding notes) and deep vibrati—characteristics it shares with the human voice. Pedal steel is most commonly associated with country music and Hawaiian music.
Pedals were added to a lap steel guitar in 1940, allowing the performer to play a major scale without moving the bar and also to push the pedals while striking a chord, making passing notes slur or bend up into harmony with existing notes. The latter creates a unique sound that has been popular in country and western music—a sound not previously possible on steel guitars before pedals were added.