1.) No freakin' idea.
2.) Aria Di Mezzo Carraterre (FF6) (LOVE that song...)
3.) Besaid Island (FFX/FFX-2)
4.) Dunno the name, but I know it first crops up after you escape Midgar. I'm pretty sure it's Kalm's theme. (FF7)
5.) The Red Rose/Beatrix's Theme(?) All's I know is it's played when Beatrix laments after Cleyra (FF9)