diff --git a/lesson4-diy3.py b/lesson4-diy3.py
index 58a6645..bd59f0a 100644
--- a/lesson4-diy3.py
+++ b/lesson4-diy3.py
@@ -12,7 +12,7 @@ last_img = pygame.image.load('last.png')  # 上一曲按钮
 next_img = pygame.image.load('next.png')  # 下一曲按钮
 logo_img = pygame.image.load('logo.png')  # 下一曲按钮
 
-pygame.mixer.music.load('123.mp3')  # 载入音乐
+pygame.mixer.music.load('歌曲4.ogg')  # 载入音乐
 
 volume = 0.8
 pygame.mixer.music.set_volume(volume)  # 初始播放音量