diff --git a/NS.py b/NS.py
index 8cba4d9..c89c248 100644
--- a/NS.py
+++ b/NS.py
@@ -11,6 +11,7 @@ from serial.tools import list_ports
 from time import sleep
 from PIL import Image
 
+import pygame
 from pygame import Surface, Color, mixer
 from pygame.event import clear
 from pygame.mixer import Sound
@@ -47,6 +48,7 @@ class NS(Game, Animation):
     NO_RESET_TIMEOUT = 3000
 
     def __init__(self):
+        pygame.mixer.pre_init(44100, -16, 2, 1024)
         Game.__init__(self)
         self.get_configuration().type_declarations.add_chart(
             {
@@ -65,10 +67,11 @@ class NS(Game, Animation):
                 }
             })
         Animation.__init__(self, self)
-        mixer.init(44100, -16, self.CHANNEL_COUNT, 4096)
         self.subscribe(self.respond, KEYDOWN)
         self.subscribe(self.respond, KEYUP)
         self.subscribe(self.respond)
+        for bgm in self.audio.bgm.values():
+            bgm.volume = 0.65
         ds = self.get_display_surface()
         self.background = Surface(ds.get_size())
         self.background.fill((0, 0, 0))
@@ -498,6 +501,7 @@ class Title(Animation):
         platform.set_glowing(platform.get_buttons_from_edges([self.UNLOCK_MOVES[self.unlock_index]]))
         self.get_game().chemtrails.activate()
         self.get_game().tony.set_frameset("static")
+        self.get_audio().play_bgm("title")
 
     def deactivate(self):
         self.active = False
@@ -1520,6 +1524,7 @@ class Boss(Animation):
             dialogue.set_name("Spoopy")
             self.spoopy.unhide()
             self.spoopy.set_frameset("normal")
+        self.get_audio().play_bgm(f"level_{index}")
         self.play(self.show_introduction_dialogue, delay=3000, play_once=True)
         self.get_game().platform.activate()
         self.get_game().chemtrails.activate()
@@ -2089,6 +2094,7 @@ class Ending(Animation):
         dialogue.set_name("???")
         dialogue.show_text("")
         self.play(self.start_wipe, delay=20000, play_once=True)
+        self.get_audio().play_bgm("end")
 
     def start(self):
         self.advance_prompt.cancel_first_press()
diff --git a/lib/pgfw b/lib/pgfw
index 619a7da..88ccb8d 160000
--- a/lib/pgfw
+++ b/lib/pgfw
@@ -1 +1 @@
-Subproject commit 619a7dab3fe318d162bd747436b4bfd02c1b17bb
+Subproject commit 88ccb8d68131a053975be4db10cde59440aaf6c1
diff --git a/resource/bgm/end.ogg b/resource/bgm/end.ogg
new file mode 100644
index 0000000..6ce1d39
Binary files /dev/null and b/resource/bgm/end.ogg differ
diff --git a/resource/bgm/level_0.ogg b/resource/bgm/level_0.ogg
new file mode 100644
index 0000000..f2f874d
Binary files /dev/null and b/resource/bgm/level_0.ogg differ
diff --git a/resource/bgm/level_1.ogg b/resource/bgm/level_1.ogg
new file mode 100644
index 0000000..7166c46
Binary files /dev/null and b/resource/bgm/level_1.ogg differ
diff --git a/resource/bgm/level_2.ogg b/resource/bgm/level_2.ogg
new file mode 100644
index 0000000..7c70fbe
Binary files /dev/null and b/resource/bgm/level_2.ogg differ
diff --git a/resource/bgm/title.ogg b/resource/bgm/title.ogg
new file mode 100644
index 0000000..38d1d8d
Binary files /dev/null and b/resource/bgm/title.ogg differ
diff --git a/resource/scores b/resource/scores
index 0c26504..33e4231 100644
--- a/resource/scores
+++ b/resource/scores
@@ -8,13 +8,3 @@
 5999999
 5999999
 5999999
-242000
-242000
-242000
-242000
-242000
-242000
-242000
-242000
-242000
-242000