Bobby Caldwell, R&B Singer and Songwriter, Passes Away at 71.

Bobby Caldwell, the singer-songwriter known for his sultry R&B hit "What You Won't Do for Love," died at the age of 71 due to long-term complications of a toxic reaction to antibiotics. Over his four-decade career, Caldwell explored various genres, including R&B, reggae, soft rock, and smooth jazz, and recorded more than a dozen albums. He was also a highly regarded songwriter, with his songs recorded by Chicago, Boz Scaggs, Neil Diamond, and Al Jarreau, among others. Caldwell's success continued in the early 1980s with albums like "Cat in the Hat" and "Carry On," and he made a comeback in 2015 with his album "Cool Uncle."