diff --git a/levels/base_level/base_level.tscn b/levels/base_level/base_level.tscn
index a07071d..36848e6 100644
--- a/levels/base_level/base_level.tscn
+++ b/levels/base_level/base_level.tscn
@@ -92,13 +92,13 @@ centered = false
 
 [node name="SFXs" type="Node" parent="."]
 
-[node name="LevelClear" type="AudioStreamPlayer2D" parent="SFXs"]
+[node name="LevelClear" type="AudioStreamPlayer" parent="SFXs"]
 stream = ExtResource("3_ou3kh")
-volume_db = -5.0
+volume_db = -5.622
 
-[node name="WrongAnswer" type="AudioStreamPlayer2D" parent="SFXs"]
+[node name="WrongAnswer" type="AudioStreamPlayer" parent="SFXs"]
 stream = ExtResource("4_yxsxp")
-volume_db = 1.0
+volume_db = 4.685
 
 [connection signal="pressed" from="HUDs/NextLevelButton" to="." method="_on_next_level_button_pressed"]
 [connection signal="pressed" from="HUDs/BackButton" to="." method="_on_back_button_pressed"]
diff --git a/levels/base_level/bgm.wav b/levels/base_level/bgm.wav
new file mode 100644
index 0000000..b8854dd
Binary files /dev/null and b/levels/base_level/bgm.wav differ
diff --git a/levels/base_level/bgm.wav.import b/levels/base_level/bgm.wav.import
new file mode 100644
index 0000000..ca4edb5
--- /dev/null
+++ b/levels/base_level/bgm.wav.import
@@ -0,0 +1,24 @@
+[remap]
+
+importer="wav"
+type="AudioStreamWAV"
+uid="uid://cr3nkhf0fejm5"
+path="res://.godot/imported/bgm.wav-5645fcab8b652fa4aadb063a7a671992.sample"
+
+[deps]
+
+source_file="res://levels/base_level/bgm.wav"
+dest_files=["res://.godot/imported/bgm.wav-5645fcab8b652fa4aadb063a7a671992.sample"]
+
+[params]
+
+force/8_bit=false
+force/mono=false
+force/max_rate=false
+force/max_rate_hz=44100
+edit/trim=false
+edit/normalize=false
+edit/loop_mode=0
+edit/loop_begin=0
+edit/loop_end=-1
+compress/mode=0
diff --git a/main.gd b/main.gd
index bfb6b2b..02e8f50 100644
--- a/main.gd
+++ b/main.gd
@@ -10,5 +10,11 @@ func _ready():
 func _process(delta):
 	pass
 
+func _on_main_menu_enter_level():
+	$BGMPlayer.play()
+
+
+func _on_bgm_player_finished():
+	$BGMPlayer.play()
 func set_victory(v: bool):
 	$Bg/DynamicBg.set_victory(v)
diff --git a/main.tscn b/main.tscn
index d8634ad..daebbfc 100644
--- a/main.tscn
+++ b/main.tscn
@@ -1,14 +1,25 @@
-[gd_scene load_steps=4 format=3 uid="uid://c17fbsiogbgo1"]
+[gd_scene load_steps=5 format=3 uid="uid://c17fbsiogbgo1"]
 
 [ext_resource type="Script" path="res://main.gd" id="1_d0et0"]
 [ext_resource type="PackedScene" uid="uid://c07co5p46apu7" path="res://objects/main_menu/main_menu.tscn" id="1_fk6j6"]
+[ext_resource type="Script" path="res://main.gd" id="1_nb6uf"]
 [ext_resource type="PackedScene" uid="uid://d3geq38s5fjc6" path="res://bg/dynamic_bg/dynamic_bg.tscn" id="2_8k4il"]
+[ext_resource type="AudioStream" uid="uid://cr3nkhf0fejm5" path="res://levels/base_level/bgm.wav" id="3_n81it"]
 
 [node name="Main" type="Node"]
-script = ExtResource("1_d0et0")
+script = ExtResource("1_nb6uf")
 
 [node name="MainMenu" parent="." instance=ExtResource("1_fk6j6")]
 
 [node name="Bg" type="Node" parent="."]
 
 [node name="DynamicBg" parent="Bg" instance=ExtResource("2_8k4il")]
+
+[node name="BGMPlayer" type="AudioStreamPlayer2D" parent="."]
+position = Vector2(234, 150)
+stream = ExtResource("3_n81it")
+volume_db = -4.685
+attenuation = 0.0001
+
+[connection signal="enter_level" from="MainMenu" to="." method="_on_main_menu_enter_level"]
+[connection signal="finished" from="BGMPlayer" to="." method="_on_bgm_player_finished"]
diff --git a/objects/card/card.tscn b/objects/card/card.tscn
index 6e08db5..0c0571d 100644
--- a/objects/card/card.tscn
+++ b/objects/card/card.tscn
@@ -51,9 +51,9 @@ shape = SubResource("RectangleShape2D_gu6l6")
 sprite_frames = SubResource("SpriteFrames_fo0r0")
 autoplay = "default"
 
-[node name="SFXPutDown" type="AudioStreamPlayer2D" parent="."]
+[node name="SFXPutDown" type="AudioStreamPlayer" parent="."]
 stream = ExtResource("7_u4ylf")
-volume_db = 6.558
+volume_db = 13.117
 
 [connection signal="mouse_entered" from="." to="." method="_on_mouse_entered"]
 [connection signal="mouse_exited" from="." to="." method="_on_mouse_exited"]
diff --git a/objects/card_base/card_base.tscn b/objects/card_base/card_base.tscn
index 3e0a797..1bdbd1b 100644
--- a/objects/card_base/card_base.tscn
+++ b/objects/card_base/card_base.tscn
@@ -64,14 +64,14 @@ sprite_frames = SubResource("SpriteFrames_bhb3x")
 
 [node name="Cards" type="Node" parent="."]
 
-[node name="SFXPickUp" type="AudioStreamPlayer2D" parent="."]
-stream = ExtResource("7_0c7kt")
-volume_db = 8.54
-
 [node name="FadeTimer" type="Timer" parent="."]
 wait_time = 0.2
 one_shot = true
 
+[node name="SFXPickUp" type="AudioStreamPlayer" parent="."]
+stream = ExtResource("7_0c7kt")
+volume_db = 9.58
+
 [connection signal="area_entered" from="." to="." method="_on_area_entered"]
 [connection signal="area_exited" from="." to="." method="_on_area_exited"]
 [connection signal="mouse_entered" from="." to="." method="_on_mouse_entered"]
diff --git a/objects/main_menu/main_menu.gd b/objects/main_menu/main_menu.gd
index e7207db..4f262ab 100644
--- a/objects/main_menu/main_menu.gd
+++ b/objects/main_menu/main_menu.gd
@@ -2,6 +2,9 @@ extends AnimatedSprite2D
 
 const ChapterMenu = preload("res://levels/chapter_menu/chapter_menu.tscn")
 const BaseLevel := preload("res://levels/base_level/base_level.tscn")
+
+signal enter_level()
+
 # Called when the node enters the scene tree for the first time.
 func _ready():
 	$start_button/AnimatedSprite2D.play()
@@ -24,6 +27,7 @@ func _on_start_button_pressed():
 	
 	base_level.init(0, 0)
 	get_tree().root.add_child(base_level)
+	enter_level.emit()
 	queue_free()
 	#get_tree().root.add_child(ChapterMenu.instantiate())
 	#queue_free()