Tarkus Emerson, Lake & Palmer

“Side one of the original LP is occupied by the 21-minute title epic track, beating both Genesis’ “Supper’s Ready” and Yes’ “Close to the Edge” by a year. Unlike the latter group’s cut-and-paste technique to obtain long suites, “Tarkus” is a thoroughly written, focused piece of music. It remains among the Top Ten classic tracks in progressive rock history.” - François Couture, AllMusic