The Warr Guitar is a musical instrument made in the United States. It is a type of touch guitar that has both bass and melody strings on one fretboard. Mark Warr, a musician from Thousand Oaks, California, created it. The Warr Guitar is similar to the Chapman Stick, another instrument played with both hands. It can be played using two-handed tapping or strumming. The guitar has between seven and 14 strings. Notable musicians who play the Warr Guitar include Trey Gunn and Colin Marston.