The first thing you have to realize about the music of Golden Sun is when the game was first released, the only way to play the game was on the very first iteration of the Game Boy Advance. This system only had 1 actual speaker and yet the music managed to sound absolutely phenomenal. In these 3 games, Motoi Sakuraba goes on to compose some of the finest music he has ever done. Sadly, to this day, no official OST of either GBA game has ever been released. There are plenty of direct game-rips out on the Internet though.