Long Harp is a traveling indoor 60-string light sculpture created in 2004 and designed for public play. Each of the light strings in Long Harp can sense user movement, speed, and tempo. Each string mixes its own library of sound to create a depth and tone that compliments public activity and random musical play.

Long Harp is part of Lewin’s Laser Harp Series, an evolution of immersive installations using movement and laser light to trigger sound.