PoF zones music issue

Hi,

I've played in the five different explorable areas of Pof on the 17th of October between 13pm and 15pm and couln't hear any of the game music. The ambient dialogue, environnement and combat sounds on the other hands, worked perfectly. I've checked on my options and it's not disactivated. I didn't checked on other areas. It annoys me quite a bit, as I've always enjoyed music in gw2.

Please tell me if i missed something and if it's not the case, i hope it'll be fixed. Thanks. Have a good day.