Originality is another criterion of aesthetic value. We may formulate an originality principle, according to which highly valuable works of art provide hitherto unavailable insights.... Notice that, although originality is a necessary condition of high aesthetic value, it is far from a sufficient condition. Many original works have little or no aesthetic value. An artwork may present a novel but uninteresting perspective, or one that is original but wrong.
James YoungSo, maybe you don't see blues so much in Styx's music but it is definitely part of Tommy's early music.
James Young