And the Kingdom Hearts version is not orchestrated. 🙁
http://bluelaguna.net/downloads/mp3s/kh2ostsoundtrack/Disc%202/24%20-%20One-Winged%20Angel%20(from%20Final%20Fantasy%20VII).mp 3
Edit – I just found a better version. I think this is the one you want.
http://bluelaguna.net/downloads/mp3s/ffacost/Disc%202/09%20-%20Sairin%20Kata%20Tsubasa%20no%20Tenshi%20~Advent %20One-Winged%20Angel~.mp3
http://bluelaguna.net/downloads/mp3s/kh2ostsoundtrack/Disc%202/24%20-%20One-Winged%20Angel%20(from%20Final%20Fantasy%20VII).mp 3
Edit – I just found a better version. I think this is the one you want.
http://bluelaguna.net/downloads/mp3s/ffacost/Disc%202/09%20-%20Sairin%20Kata%20Tsubasa%20no%20Tenshi%20~Advent %20One-Winged%20Angel~.mp3
That second one isn’t from Kingdom Hearts. It’s "Advent One Winged Angel" from Final Fantasy VII: Adven Children.
Yeah, I know. I just meant a better orchestrated OWA, not a longer KHII OWA.