I'm gonna snag a few songs from various Final Fantasy albums with different styles, ect.. Check em out if the name interests you. :3 Keep in mind some of these will be remakes/covers and not the original song however they will be from official albums.
Also I will try and keep them in order according to games.
https://www.youtube.com/watch?v=g0Id7inOneM
title: Darkness
artist: Masashi Hamauzu
album: Eternity Dirge of Cerberus - Final Fantasy VII- Original Soundtrack
FF game: Dirge of Cerberus: Final Fantasy VII
note: onimous, techno
https://www.youtube.com/watch?v=JzG24vGN_H0
title: Longing
artist: Gackt
album: Dirge of Cerberus - Final Fantasy VII- Original Soundtrack
FF game: Dirge of Cerberus: Final Fantasy VII
note: Best ending songs, in my opinion(excluding FFXII's ending.. of course). This song might throw me back at J-rock someday.. maybe.
https://www.youtube.com/watch?v=ZmfL2X2EafY
title: You're Not Alone
artist: Dale North & Ailsean
album: Final Fantasy - Project Majestic Mix - A Tribute to Nobuo Uematsu - GOLD
FF game: FFIX
note: nice song. great emotion
https://www.youtube.com/watch?v=dbLQhzsJG0A
title: Otherworld
artist: Nobuo Uematsu
album: Final Fantasy X - Original Soundtrack
FF game: Final Fantasy X
note: Best INTRO.
https://www.youtube.com/watch?v=F9ee_Ez6tFk
title: Eternity ~Memory of Lightwaves~
artist: Noriko Matsueda & Takahito Eguchi
album: Eternity ~Memory of Lightwaves~ Music from FINAL FANTASY X-2
FF game: FFX-2
note: beautiful song. very uplifting
https://www.youtube.com/watch?v=TgN85J2BXC0
title: White Room
artist: Hitoshi Sakimoto
album: Final Fantasy XII - Original Soundtrack
FF game: Final Fantasy XII
note: Very emotional. With the visual event the game placed on you with this song, it was very sad.
NOTE: This is where FFXIII will start. I will stress this series and display a lot fo songs. Not only because each song is awesome but because many people skip this series and the great music included.
https://www.youtube.com/watch?v=DrMbViOhvV8
title: The Yaschas Massif
artist: Masashi Hamauzu
album: Final Fantasy XIII - Original Soundtrack
FF game: Final Fantasy XIII
note: What a perfect song to relax to. @_@
https://www.youtube.com/watch?v=5kkz6JwE3xE
title: The Sunleth Waterscape
artist: Masashi Hamauzu
album: Final Fantasy XIII - Original Soundtrack
FF game: Final Fantasy XIII
note: Some songs in this game+XIII-2 have, in my opinion, the perfect blend of classical, techno and vocal aspects. This being one of the best..
https://www.youtube.com/watch?v=ucX7dKzLE2g
title: The Archylte Steppe
artist: Masashi Hamauzu
album: Final Fantasy XIII - Original Soundtrack
FF game: Final Fantasy XIII
note: By far my favorite classical piece in this series. Might be the fact that the region in the game fit it so perfectly(sometimes it's all about presentation).
https://www.youtube.com/watch?v=w7TB_6mEnwg
title: "Blinded By Light" (Extended Version)
artist: Masashi Hamauzu
album: Final Fantasy XIII - Original Soundtrack PLUS
FF game: Final Fantasy XIII
note: My favorite battle theme
https://www.youtube.com/watch?v=YPEzumonJv4
title: New Bodhum
artist: Square-Enix Music
album: Final Fantasy XIII-2 - Original Soundtrack
FF game: Final Fantasy XIII-2
note: Definitely my favorite town-theme. I couldn't estimate how many hours i spent driving home from school listening to this song.
https://www.youtube.com/watch?v=twjprvhoumc
title: Crazy Chocobo_Ustream Edit
artist: Nobuo Uematsu(unsure, confirm for yourself..)
album: Final Fantasy XIII-2 - Original Soundtrack PLUS
FF game: Final Fantasy XIII-2
note: Don't like your current chocobo song? get a music device and replace it with this.
https://www.youtube.com/watch?v=xbXusNChCgc
title: Clash on the Big Bridge - Oriental MIX - (Big Bridge no Shitou -Oriental Mix-)
artist: Nobuo Uematsu(unsure, confirm for yourself..)
album: Final Fantasy XIII-2 - Original Soundtrack PLUS
FF game: Final Fantasy XIII-2
note: Whenever I play this song to someone new they immediately say "NARUTO!". Are you one of them? lol
That's all I got for now.. I could have done more but this kind of takes a while. =_= Maybe I'll do more sometime?