Emerson, Lake & Palmer

I still need to understand why for many, an artist can't be great if they don't know how to play an instrument. We're talking about a unique band (the only ones that come close are the (inferior) Yes, in the progressive realm). I believe the suite "Tarkus" is among the top 10 light music compositions to be passed down to future generations. Definitely among the BEST in the progressive genre.