Now, there have been many, many covers of the fantastic final boss theme from this game. (gamingreinvented.com)
There's also the catchy and overly dramatic final boss theme, but obviously I can't spoil that too much. (gamingreinvented.com)
Favourites such as Aeriths's (translation error or not, she'll however always be Aeris to me) emotional theme, the dramatic One Winged Angel final boss theme from FF7 and Terra's haunting theme from Final Fantasy 6 are included. (consoleob.com)