At the Hop!

Bobby Darin!!

From Wikipedia:

Darin suffered from poor health his entire life. He was frail as an infant and, beginning at age eight, was stricken with recurring bouts of rheumatic fever that left him with a seriously weakened heart. During his first heart surgery, in January 1971, he had two artificial valves implanted in his heart. He spent most of that year recovering from the surgery.
During the last few years of his life, he was often administered oxygen during and after his performances on stage and screen.


In 1973, after failing to take antibiotics to protect his heart before a dental visit, Darin developed sepsis, an overwhelming systemic infection. This further weakened his body and affected one of his heart valves. On December 11, he checked himself into Cedars of Lebanon Hospital in Los Angeles for another round of open-heart surgery to repair the two artificial heart valves he had received in January 1971. On the evening of December 19, a five-man surgical team worked for over six hours to repair his damaged heart. Shortly after the surgery ended in the early morning hours of December 20, 1973, Darin died in the recovery room without regaining consciousness. He was 37 years old.
Darin's last wish in his will was that his body be donated to science for medical research. His remains were transferred to the UCLA Medical Center shortly after his death.