Emerson, Lake & Palmer (informally known as ELP) were an English progressive rock supergroup formed in London in 1970. The band consisted of Keith Emerson (keyboards) of the Nice, Greg Lake (vocals, bass, guitars, producer) of King Crimson, and Carl Palmer (drums, percussion) of Atomic Rooster. With nine RIAA-certified gold record albums in the US, and an estimated 48 million records sold worldwide, they were one of the most popular and commercially successful progressive rock groups of the 1970s, with... [more on Wikipedia]