Duncan Sheik, the singer-songwriter whose 1996 single “Barely Breathing” became a Grammy-nominated pop breakthrough before he went on to acclaimed work in theater, has died. He was 56.

Sheik’s family announced his death Friday, Sept. 18, saying “with profound sadness” that he had died the previous night “surrounded by love.” The announcement came one day after the family said he was in “critical but stable” condition in a hospital because of an undisclosed ailment.

According to The New York Times, Sheik’s death at a hospital in Manhattan was confirmed by his mother, Suzanne Sheik, who said the cause was organ failure.

In the weeks before his death, Sheik had appeared to be hospitalized for at least a month, sharing updates from his room. In an Aug. 20 Instagram post, he appeared in a medical gown and wrote, “I would prefer to be home making music. But a bit of reflection is not too bad … boring hospital stays have their benefits (outside the obvious.)” On Sept. 6, he posted that he was “still bored in hospital.”

The family’s statement remembered Sheik as both an artist and a loved one, citing his Grammy nomination for “Barely Breathing” and his Tony- and Grammy-winning work on the 2006 coming-of-age rock musical Spring Awakening, for which he wrote the music.

“The world has a lost a singular talent, and deeply influential voice in music and theater,” the family wrote. “Duncan’s artistry touched many and leaves an indelible mark on the cultural landscape.”

The note continued: “Duncan was a father, husband, son, brother, and friend. He will be remembered for his sensitivity, wit, inteligence, and depth of spirit he brought to those who knew and loved him. We are deeply grateful for the outpouring of love from his fans, friends, collaborators, and the artistic community. His musical legacy will continue to inspire generations to come.”

Born in Montclair, N.J., on Nov. 18, 1969, Sheik studied semiotics at Brown University, where he played in a band with singer Lisa Loeb. He moved to Los Angeles in 1992 to pursue a future in music.

His commercial breakout arrived with “Barely Breathing,” the relationship-on-the-rocks ballad from his self-titled debut album. The song reached No. 16 on the Billboard Hot 100 and remained on the chart for 55 weeks. It also earned Sheik a Grammy nomination for best male pop vocal performance.

After that debut, Sheik released Humming in 1998 and then a string of six more albums. His most recent album, Claptrap, was released in 2022.

Though he did not return to the same chart heights as “Barely Breathing,” Sheik built a second major chapter as a composer for Broadway and off-Broadway productions. His work on Spring Awakening brought him Tony Awards for best original score and best orchestration.

Sheik also wrote music for Alice By Heart, the 2013 musical adaptation of Bret Easton Ellis’ horror novel American Psycho, and the 2013 musical adaptation of Because of Winn-Dixie.

Across pop recording and theater, Sheik’s career was marked by the rare combination of a major chart hit and award-winning stage work. His family’s announcement framed that legacy through both achievements, remembering an artist whose songs moved from radio to musical theater while continuing to connect with fans, collaborators and the artistic community.