The Ice Spikes biome does not have any ambience. Whenever I walk in from another biome, the sound of the first fades away and there's no new sound playing.

I'm playing with Version 5.2.13 Forge, version 1.19.2 of Minecraft

Can you go inside the biome, use the command /ambient-debug and send me a screenshot of it?

The screenshots are attached. It also doesn't seem to work with Mushroom Biomes either.

Released a new version which adds a wind sound to ice spikes. However I have no clue what sound would suit the mushroom. Do you have any suggestions?

Also sorry that it took me so long to actually respond.

I think I have an idea for the mushroom biome actually; how about a very subtle, melodic electrical pinging and humming? Mushrooms can actually send electrical signals to each other, and these can be detected by metal cables hooked up to soundboards; here's a video showing what that sounds like:

Finally fixed in the newest version. Took me quite long. Hope you look the result. If not open a new issue and let me know what you think could be improved.