In my humble opinion, "Firth of Fifth" is my favorite song from "S.E.B.T.P." I cannot say that I have ever been an aficionado of that album, I have a tendency to prefer "Duke," "A Trick Of The Tail," "The Lamb Lies Down On Broadway," "Foxtrot" "Nursery Cryme" and "Genesis" over "Selling England By The Pound." ;-)