Drums, drums on the beach, they are coming.

Lekjih

I was wandering along Auridon's coast, heard drums near a Maormer camp. Thought "ooh, that's pretty cool", ride away, no more drumming. It starts again outside Toothmaul. Stops again as I ride away. A tree outside Bewan, drumming. A grahtoak near Haven, Shadowfen rivers, Hag Fen way shrine - drumming. I don't know what's causing it. None of the quests I have have ever caused ambient drumming, no sets, no mementos going. Is this an addition with the latest update? It seems to be anchored in the environment. It can only be shut up by also turning off skill sounds, and I'm not doing that.