You can opt out of audiobooks and save the extra cost they added the other month. https://www.moneysavingexpert.com/news/2024/05/spotify-saving-basic-plan-audiobooks/?source=CRM-MSETIP-84b484ca1c047788624

I think the atmosphere can increase in volume when it gets warm because it’s not a proper closed system, so the pressure doesn’t go up in the same way.

There’s really not much in it, I can kinda see it’s slightly less green as well as brighter like you say.