All visitors play violin

Ever since the last update, I noticed that all sims visiting a household, doesn't matter if townies or played households, start playing violin out of nowhere (a couple second plays, not full songs). These sims don't have a muser trait and shouldn't have a violin in inventory as far as I know, unless it spawned there magically.

I guess I prefer that to idle phone animations, but I wish it was more specific to sims that actually have a violin skill or violin in inventory.

I looked at the preferences of one of those sims and didn't find likes violin in the trait list nor a skill.

As info, I do have mods, though none music-related.