Hello all. Recently, I've finally had the chance to play this game (since it din't come out in europe), and I've fell in love with it's soundtrack.
The music is really catchy, and I've searched high and low on the internet, but alas, apart for a few songs, I've never found a complete OST.
So, I decided to extract the music directly from the game, and I wanted to share it for all the people who wanted the music too.
MediaFire (http://www.mediafire.com/download/xnryz0swer9t9h8/GGH_OST.zip)
Mega (https://mega.co.nz/#!DQYwwDaC!-I2UFomYUR6o5O0fSvZxY8FSKPYcdbyS03J0917ZVJo)
I've checked the credits and the ingame music player for the songs titles, artists, composers and stuff. Hope I've done everything correctly.
Just a few things: There are three songs that I had to use Winamp to listen, and I recorded them with GoldWave.
The songs are "Menu", "Offstage" and "pieBgm", and if you find them to be in lover quality, this may be the reason.
Also, I've never heard the "pieBgm" music ingame. I believe it must be unused, and that may explain the bad quality of that music.

And for anyone who wants them, here are the original extracted files, before I converted them in MP3.
Mega only because Mediafire won't just accept the file or something. I upload it but it won't appear in my items folder... wat.
Mega (https://mega.co.nz/#!Gdx1BbhB!Xm_w5WSgBKnHV3-3yCNH3tRE0Q6hBj9LdChU3rStPEk)
They're in Wav format, and are in 1536kpbs quality.


Well... Enjoy, I guess.
(I'm italian. Any grammar monstrosities are my bad)