Hi
Here the crash report

---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 2025-07-28 02:03:25
Description: Unexpected error

java.lang.NullPointerException: Unexpected error
at java.base/java.util.Objects.requireNonNull(Objects.java:233)
at knot//dev.hephaestus.atmosfera.client.sound.AtmosphericSoundHandler.getMusicSound(AtmosphericSoundHandler.java:85)
at knot//net.minecraft.class_310.modifyReturnValue$zdb000$atmosfera$getAmbientMusic(class_310.java:5599)
at knot//net.minecraft.class_310.method_1544(class_310.java:2627)
at knot//net.minecraft.class_1142.method_18669(class_1142.java:36)
at knot//net.minecraft.class_310.method_1574(class_310.java:1907)
at knot//net.minecraft.class_310.method_1523(class_310.java:1324)
at knot//net.minecraft.class_310.method_1514(class_310.java:947)
at knot//net.minecraft.client.main.Main.main(Main.java:265)
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:480)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)

A detailed walkthrough of the error, its code path and all known details is as follows:

-- Head --
Thread: Render thread
Stacktrace:
at java.base/java.util.Objects.requireNonNull(Objects.java:233)
at knot//dev.hephaestus.atmosfera.client.sound.AtmosphericSoundHandler.getMusicSound(AtmosphericSoundHandler.java:85)
at knot//net.minecraft.class_310.modifyReturnValue$zdb000$atmosfera$getAmbientMusic(class_310.java:5599)
at knot//net.minecraft.class_310.method_1544(class_310.java:2627)
at knot//net.minecraft.class_1142.method_18669(class_1142.java:36)

I also have Also the following Sound/Music related mods as well
https://modrinth.com/mod/ambientsounds/versions
https://modrinth.com/mod/sound-physics-remastered/versions
https://modrinth.com/mod/audioplayer/versions
https://modrinth.com/mod/sound/versions
https://modrinth.com/mod/music-control/versions
https://modrinth.com/plugin/simple-voice-chat/versions
https://modrinth.com/mod/voice-chat-interaction/versions
https://modrinth.com/mod/replay-voice-chat/versions

the ones I'm suspected is sounds and music control or ambient sounds
Hope it can be helpful
Thanks in advance <3

Looks like an incompatibility with Music Control.
While there's a simple fix for Atmosfera, I'm not convinced that's the best route, so I reported it on their side.