diff --git a/mini_pupper_music/launch/music.launch.py b/mini_pupper_music/launch/music.launch.py
index c04b169..3c85a0f 100644
--- a/mini_pupper_music/launch/music.launch.py
+++ b/mini_pupper_music/launch/music.launch.py
@@ -1,7 +1,6 @@
 from launch import LaunchDescription
 from launch_ros.actions import Node
-from launch.substitutions import LaunchConfiguration
-from launch.actions import DeclareLaunchArgument, LogInfo
+
 
 def generate_launch_description():
     music_server_node = Node(
@@ -12,4 +11,4 @@ def generate_launch_description():
         )
     return LaunchDescription([
         music_server_node
-    ])
\ No newline at end of file
+    ])
diff --git a/mini_pupper_music/mini_pupper_music/music_server.py b/mini_pupper_music/mini_pupper_music/music_server.py
index f1a1206..cd2da76 100644
--- a/mini_pupper_music/mini_pupper_music/music_server.py
+++ b/mini_pupper_music/mini_pupper_music/music_server.py
@@ -9,6 +9,7 @@
 import os
 from ament_index_python.packages import get_package_share_directory
 
+
 class SoundPlayerNode(Node):
     def __init__(self):
         super().__init__('mini_pupper_music_service')
@@ -53,7 +54,7 @@ def play_sound_thread(self):
         file_name = 'resource/robot1.wav'
         package_path = get_package_share_directory(package_name)
         sound_file = os.path.join(package_path, file_name)
-    
+
         data, fs = sf.read(sound_file, dtype='float32')
         while self.is_playing:
             sd.play(data, fs)
@@ -67,6 +68,7 @@ def stop_sound(self):
                 # If the thread is still running, stop the sound playback
                 sd.stop()
 
+
 def main(args=None):
     rclpy.init(args=args)
     sound_player_node = SoundPlayerNode()
@@ -74,5 +76,6 @@ def main(args=None):
     sound_player_node.destroy_node()
     rclpy.shutdown()
 
+
 if __name__ == '__main__':
-    main()
\ No newline at end of file
+    main()
diff --git a/mini_pupper_music/setup.py b/mini_pupper_music/setup.py
index 6d4ba1e..8df903c 100644
--- a/mini_pupper_music/setup.py
+++ b/mini_pupper_music/setup.py
@@ -9,7 +9,8 @@
     version='1.0.0',
     packages=find_packages(exclude=['test']),
     data_files=[
-        ('share/ament_index/resource_index/packages', ['resource/' + package_name]),
+        ('share/ament_index/resource_index/packages',
+         ['resource/' + package_name]),
         ('share/' + package_name, ['package.xml']),
         ('share/' + package_name + '/resource', glob('resource/*')),
         (os.path.join('share', package_name), glob('launch/*.launch.py')),