Actually my opinion of One Winged Angel is very similar to my opinion of the opera scene - pushed the limits of the format, didn't work, soundchip wasn't good enough to pull it off and it all comes off as just plain corny. There is one big difference between OWA and the opera scene though and that's that I think OWA is a much more creative piece, sometimes for better and sometimes for worse. My opinion of the song has improved over time for reasons I can't really put a finger on, though I'm still pretty lukewarm about it (and FF7's entire soundtrack in general).