Favorite places based solely on music.

Gonna have to go with Ninja Castle/Kaede Castle on this one. All of the BGMs there, save the outer part, are my favorite.

Scratch that, Akhyrum's theme is hands down my most favorite, even though he's not in gMS yet.

Showa, Omega Sector, Spa of Hell.

Ellinia Tree Dungeons.
Omega Sector.
ToT Regrets.

And Aqua Road's warm ocean. Cico, Krappy, Pinbooms, etc.

Herb Town.
I admit, sometimes I AFK there, turn off monitor, turn UP speakers in my room and go snooze
or endless loop the bg music on youtube.

Sharenian Waterway in GPQ. Rarely heard, obscenely underrated, and now impossible to listen to in-game. Such a shame.

Eos/Helios Tower/LPQ music. It's so cheery and uplifting.

Well, I just discovered this area today, but I have to say that the Mirror Cave on Rein has an incredible soundtrack in it. Very relaxing, very much like the Elin Forest soundtrack.

Nautilus and OPQ for nostalgia
Ellin Forest because it's just amazing all around

I'm a fan of the Kerning Square main area music too
Oh, and the Ludi/Leafre boat ride music

I don't really like any ToT music except the main one.

I like the DB place. :] Kerning City has a nice beat too

Sharenian Waterway, Ellinia Tree Dungeons, and Papa Pixie Boss Battle. I have more faves but those I'd say are my top 3.