This gorgeous eerie music plays in Raven Hill, so you might wanna go take a listen in game, it’s quite interesting! ^^
This track is called “Gallow’s End”, after the Gallow’s End Tavern in Brill, Tirisfal Glades, on the Taverns of Azeroth soundtrack.
Back in vanilla, the Gallow’s End tavern used to play a short, manic track upon first entering that was very reminiscent of the Warcraft 3 Undead campaign music (such as Blight and Carrion Waves). It was unique to the Brill inn:
As of Wrath of the Lich King with Brill’s revamp, this track no longer plays in the Gallow’s End Tavern or any other undead inn. To my knowledge, the last place it can be heard is at The Bone Pile in Razorfen Downs at the boss Mordresh Fire Eye.