LOS ANGELES, Sept. 18 -- Duncan Sheik, the singer behind 1996 hit Barely Breathing and composer of Broadway musical Spring Awakening, is in hospital in critical but stable condition, his family said.

The Hollywood Reporter said Sheik's family disclosed his condition in a statement posted on his Instagram on Wednesday, while asking for privacy and declining to provide further information about his medical condition.

"Out of respect for Duncan and our family, we will not be sharing any further medical details at this time."

"We kindly ask for privacy during this incredibly difficult time and will provide updates when appropriate," the statement continued. "Thank you for the continued love and support."

Sheik, 56, earned a Grammy nominat...