The singer-songwriter is best remembered for the 1996 hit “Barely Breathing.”

Duncan Sheik, the rocker and musical-theater composer, is dead at 56. Two productions of his work, the new musical ‘Memoirs of an Amorous Gentleman’ and a ‘Spring Awakening’ revival, are slated to premiere Off Broadway.

Duncan Sheik, the voice behind "Barely Breathing" and Tony-winning "Spring Awakening," died from organ failure at 56, his mother confirmed.

Tony- and Grammy-winning musician Duncan Sheik has died at 56. Before Broadway's “Spring Awakening,” he had been best known for the hit “Barely Breathing.”

Duncan Sheik, the Tony- and Grammy-winning singer-songwriter who crafted the music for “Spring Awakening,” has died. He was 56.

Duncan Sheik, who went from pop star with 'Barely Breathing' to Broadway composer with 'Spring Awakening,' has died at 56.