Theme of Love - FF4
Clash at the Big Bridge - FF5

Final Fantasy VI
Terra's Theme
Celes Theme
Kefka's Theme

Final Fantasy VII
Mako Reactor
Aerith's Theme
One Winged Angel (as well as Crisis Core version)

Final Fantasy VIII
Love Grows
Fishermans Horizen
Libera Fatali
Maybe i'm a Lion
Man With a Machine Gun

Final Fantasy IX
Vivi's Theme
Rose of May
The Place I'll Return to Someday
You're Not Alone
Vamo Alla Flamenco

Final Fantasy X
Zanarkand
Ending Theme
Sutinaki de ne

Final Fantasy XI
Ronfaure
Memoro de la Stono

Final Fantasy XII
Main Opening Theme

Crisis Core
Under the Apple Tree
Price of Freedom
One Winged Angel