Through no fault of their own I think it was a hard-ask of them to make about 15+ ‘Nerubian’ tracks for zone, dungeon and raid encounters.
Spiders aren’t exactly musicians so they all ended up going along with ‘sinister’ vibes which can drag on.
E.G: https://youtu.be/xKqhGuwi3lU
If you contrast that to say Pandaria music, it’s much easier to approach with a mix of East Asian culture and Panadaren humour.