1967, thank you very much. Just because one prefers certain new music to certain old music doesn't mean that one is young. I happen to love a lot of stuff from the 60's and early 70's, including much of the Yes catalog from that time, as well as a lot of other progressive rock from that period. It's just that if you lined up all the Yes albums together and asked me to pick favorites, I'd go for the Rabin stuff first.