Tenor Jerry Hadley shot himself in the head and is in hospital attached to life support. “Mr. Hadley created the title role in Mr. Harbison’s ‘Great Gatsby’ at the Metropolitan Opera in 1999, and performances in the role in May 2002 were his last at the Met, where he made his debut in 1987. ‘He came across, obviously, as a very upbeat character, but you could always tell, in his singing, that there was a lot of complexity to his personality.”