Before Emerson,Lake, and Palmer, Greg Lake was the bassist and lead vocalist for King Crimson. When he left King Crimson he was replace by John Wetton who had a very similar voice. Later, in a turnabout, Lake replaced Wetton in Asia. Alas, both of them have now passed on, Lake in 2016, Wetton in 2017, both of cancer. I saw King Crimson live once and was disappointed since they didn’t play their best song, In the Court of the Crimson King.