diff --git a/public/audio/bgm/desert.mp3 b/public/audio/bgm/desert.mp3
index febbacc0100..10938f814fe 100644
Binary files a/public/audio/bgm/desert.mp3 and b/public/audio/bgm/desert.mp3 differ
diff --git a/public/audio/bgm/fairy_cave.mp3 b/public/audio/bgm/fairy_cave.mp3
index 4e1c9ea0eb4..32cc3dbaa41 100644
Binary files a/public/audio/bgm/fairy_cave.mp3 and b/public/audio/bgm/fairy_cave.mp3 differ
diff --git a/src/field/arena.ts b/src/field/arena.ts
index 06ba6fdd334..6f2310b95c2 100644
--- a/src/field/arena.ts
+++ b/src/field/arena.ts
@@ -895,7 +895,7 @@ export class Arena {
       case BiomeId.CAVE:
         return 14.24;
       case BiomeId.DESERT:
-        return 1.143;
+        return 9.02;
       case BiomeId.ICE_CAVE:
         return 0.0;
       case BiomeId.MEADOW:
@@ -923,7 +923,7 @@ export class Arena {
       case BiomeId.JUNGLE:
         return 0.0;
       case BiomeId.FAIRY_CAVE:
-        return 4.542;
+        return 0.0;
       case BiomeId.TEMPLE:
         return 2.547;
       case BiomeId.ISLAND: