Keith Emerson, founding member and keyboardist of Emerson, Lake and Palmer and a prog rock legend, died Friday. He was 71. His bandmate Carl Palmer and the trio's official Facebook confirmed Emerson's death. TMZ reported that police found Emerson with a single gunshot wound to the head, and Santa Monica police confirmed to Billboard that Emerson died by suicide. "We regret to announce that Keith Emerson died last night at his home in Santa Monica, Los Angeles, aged 71. We ask that the family’s privacy and grief be respected," the band wrote.