Just found and transcribed the band score for this song! It's one of my favorites and also the 2nd opening to Magi.

Porno Graffitti - Matataku Hoshi no Shita de

One OK Rock - The Beginning 
http://www.mediafire.com/?7kpaj1ddndlk0d6

Porno Graffiti - Hitori No Yoru
http://www.mediafire.com/?yyn37y1ng2oktya