Al Jarreau

Al Jarreau, famed R&B and jazz singer, died Sunday morning ... according to his reps. The 7-time Grammy winner had been hospitalized recently in Los Angeles. Amid his medical battle ... he announced he would be retiring. He'd been touring almost non-stop for 50 years. A message on his website says…

A rep for Al Jarreau tells TMZ he was diagnosed with pneumonia before the concert, saying, "Mr. Jarreau believes that his illness and fatigue resulted from a very busy week on tour, which included 4 concerts in Austria. He will spend a short time recovering at home before resuming his normal work…