Oh -god-.

All I can say is, ALL SEIKEN DENSETSU MUSIC.

More specifically..

SD: Mission of Mana, Rising Sun, Endless Battlefield
SD2: Angel's Fear, Give Love It's Rightfull Time, Color of the Summer Sky, Did you see the sea, The Orphan of the Storm.

... Who am I kidding, that entire soundtrack.

SD3: Meridian Child hands down no battle to any other song.

CT: Schala's Theme, Robo's theme, FROG'S THEME, Magus theme...
Once again, THE ENTIRE SOUNDTRACK IS MADE OF MUSICAL GOLD.