Let's move this to the FF Music forum...

VI is my absolute favorite soundtrack with V and VII being in second place for me. VI was so awesome, Uematsu even said he could retire from music after he created it.

Terra
Awakening
Aria Di Mezzo Carattere
Overture
Cyan
Kefka
Devil's Lab
Opening theme
Dancing Mad
Decisive Battle
Dark World
Coin Song
Epitaph
Setzer
Relm
Shadow

Seriously there are too many to list and VI I feel set the standard for awesome Character themes which I've yet to see an FF even match let alone beat.