Progressive rock supergroup formed out of Keith Emerson of The Nice, Greg Lake of King Crimson, and Carl Palmer of The Crazy World of Arthur Brown. They are noted for their Karn Evil 9, which is divided into three movements called "impressions". The most popular is part two of the first impression, although the line "Welcome back my friends to the show that never ends" can cause confusion as to what started it. This part is common on the radio due to its shorter length.