diff --git a/common/audio_manager/assets/morceaux/histoire/subterra.ogg b/common/audio_manager/assets/morceaux/histoire/subterra.ogg
new file mode 100644
index 0000000..6753f6f
Binary files /dev/null and b/common/audio_manager/assets/morceaux/histoire/subterra.ogg differ
diff --git a/common/audio_manager/assets/morceaux/histoire/subterra.ogg.import b/common/audio_manager/assets/morceaux/histoire/subterra.ogg.import
new file mode 100644
index 0000000..d016c25
--- /dev/null
+++ b/common/audio_manager/assets/morceaux/histoire/subterra.ogg.import
@@ -0,0 +1,19 @@
+[remap]
+
+importer="oggvorbisstr"
+type="AudioStreamOggVorbis"
+uid="uid://bdsghxlbtduuy"
+path="res://.godot/imported/subterra.ogg-458c2f15c134af211d5a71b5819758c5.oggvorbisstr"
+
+[deps]
+
+source_file="res://common/audio_manager/assets/morceaux/histoire/subterra.ogg"
+dest_files=["res://.godot/imported/subterra.ogg-458c2f15c134af211d5a71b5819758c5.oggvorbisstr"]
+
+[params]
+
+loop=false
+loop_offset=0
+bpm=0
+beat_count=0
+bar_beats=4
diff --git a/common/audio_manager/audio_manager.tscn b/common/audio_manager/audio_manager.tscn
index 8874a8a..5c5e602 100644
--- a/common/audio_manager/audio_manager.tscn
+++ b/common/audio_manager/audio_manager.tscn
@@ -186,6 +186,9 @@ unique_name_in_owner = true
 stream = ExtResource("8_tuvql")
 volume_db = -5.0
 
+[node name="Subterra" type="AudioStreamPlayer" parent="Ambiances" unique_id=2019011683]
+unique_name_in_owner = true
+
 [node name="Musics" type="Node" parent="." unique_id=1450527710]
 unique_name_in_owner = true
 
diff --git a/stages/3d_scenes/cockpit_scene/scripts/ship_tutorial.gd b/stages/3d_scenes/cockpit_scene/scripts/ship_tutorial.gd
index e9e41cb..33ab2c0 100644
--- a/stages/3d_scenes/cockpit_scene/scripts/ship_tutorial.gd
+++ b/stages/3d_scenes/cockpit_scene/scripts/ship_tutorial.gd
@@ -23,7 +23,7 @@ func _ready():
     ok_button.button_down.connect(_on_ok_button_button_down)
 
 func appear():
-    AudioManager.play_sfx("Reveal")
+    AudioManager.play_sfx("Unlock_tool")
     animation_player.play("appear")
     Input.mouse_mode = Input.MOUSE_MODE_VISIBLE
     player.controlling_player=false