R&B/jazz singer Al Jarreau has died, TMZ reports. He was 76 years old. A cause of death has not yet been revealed, but Jarreau had been in the hospital this past week “due to exhaustion.” In the 1960s, Al Jarreau sang with George Duke at a San Francisco nightclub. By 1975, he released his debut album, We Got By. Two years later, his record Look to the Rainbow earned him his first Grammy nomination and win for Best Jazz Vocal Performance. In total, Jarreau won seven Grammys, taking home awards in the jazz, R&B, and pop categories.