How to Make the Music Change When You Enter a New Biome

The pack relies on the Reactive Music mod to decide which track plays, and biome detection is the main trigger. If you hear the same song everywhere, the problem is almost always the config, not the pack itself.

Check That Reactive Music Is Loaded

Open your resource pack list and confirm both Reactive Music and Jors Cobblemon Music Pack are enabled, with the music pack placed above the base game assets. Reactive Music needs to be present as a mod for the biome logic to fire at all — the resource pack alone only supplies the audio files.

Verify Biome Switching Works

Walk between two clearly different biomes, such as a plains area and a nearby forest or desert. Give each transition a few seconds; the track does not cut instantly on the first block you cross. If you are using Cobblemon, note that some of its custom biomes may not have a mapped track, so you will hear the fallback song there instead of silence.

Adjust the Config If Nothing Changes

Open the Reactive Music config and look for the biome category. Make sure biome-based selection is turned on and that no single track has been forced as an override. If you previously set a manual track for testing, clear it. Reload with F3+T after editing so the pack re-reads its mappings without a full restart.