Actually I have played Spirit Tracks. I will say that the title theme stood out to me as quite a memorable track. It really hearkens back to the days of Wind Waker after Phantom Hourglass sort of went moot on its music. Not that Phantom Hourglass was bad, but it just didn't take enough risks with its soundtrack. Spirit Tracks definitely had that infectious melodic joviality to it, which definitely suited the graphics and story to a lesser degree. On the spectrum of Mario - Zelda, Spirit Tracks hit closer to Mario in terms of atmosphere with its music and graphics. Which is nothing bad, but the brooding notes of Twilight Princess are just more my cup of tea, just like its graphics and gameplay.