save project

my_music.py

@@ -56,7 +56,14 @@ while True:
                     else:
                         play_button = play_img
                         pygame.mixer.music.pause()
-
+                if x > 120 and x < 220 and y > 350 and y < 400:
+                    num -= 1
+                    if num<0:
+                        num=len(music_list)-1
+                    pygame.mixer.music.load(path+'\\'+music_list[num])
+                    pygame.mixer.music.play()
+                    play_button=stop_img
+                    click=0
     if pygame.mixer.music.get_busy() == False:
         num+=1
         if num>len(music_list)-1: