diff --git a/BGM/truth.ogg b/BGM/truth.ogg
new file mode 100644
index 00000000..a5f093e8
Binary files /dev/null and b/BGM/truth.ogg differ
diff --git a/Zframework/bgm.lua b/Zframework/bgm.lua
index e644b4da..04ba7e43 100644
--- a/Zframework/bgm.lua
+++ b/Zframework/bgm.lua
@@ -33,8 +33,9 @@ BGM.list={
 	"secret8th",--master-1, survivor-2
 	"secret7th",--master-2, survivor-3
 	"waterfall",--sprint Penta/MPH
-	"newera",--bigbang, pc challenge, survivor-1, tech-normal
+	"newera",--bigbang, survivor-1, tech-normal
 	"oxygen",--c4w/pc train
+	"truth",--pc challenge
 
 	"distortion",--master-3
 	"far",--GM
diff --git a/modes/pcchallenge_hard.lua b/modes/pcchallenge_hard.lua
index 6c795e9d..f7e64900 100644
--- a/modes/pcchallenge_hard.lua
+++ b/modes/pcchallenge_hard.lua
@@ -6,7 +6,7 @@ return{
 		target=100,dropPiece=PLY.check_lineReach,
 		freshLimit=15,
 		ospin=false,
-		bg="rgb",bgm="newera",
+		bg="rgb",bgm="truth",
 	},
 	pauseLimit=true,
 	load=function()
diff --git a/modes/pcchallenge_lunatic.lua b/modes/pcchallenge_lunatic.lua
index a5034a1d..d00e01e0 100644
--- a/modes/pcchallenge_lunatic.lua
+++ b/modes/pcchallenge_lunatic.lua
@@ -6,7 +6,7 @@ return{
 		target=100,dropPiece=PLY.check_lineReach,
 		freshLimit=15,
 		ospin=false,
-		bg="rgb",bgm="newera",
+		bg="rgb",bgm="truth",
 	},
 	pauseLimit=true,
 	load=function()
diff --git a/modes/pcchallenge_normal.lua b/modes/pcchallenge_normal.lua
index 305731c0..fe73d0e1 100644
--- a/modes/pcchallenge_normal.lua
+++ b/modes/pcchallenge_normal.lua
@@ -5,7 +5,7 @@ return{
 		drop=300,lock=1e99,
 		target=100,dropPiece=PLY.check_lineReach,
 		ospin=false,
-		bg="rgb",bgm="newera",
+		bg="rgb",bgm="truth",
 	},
 	pauseLimit=true,
 	load=function()