diff --git a/memory_app_classic.py b/memory_app_classic.py
index e36a3260ddf8deb8092b40539c44d2a0e33bf13f..a70ec8e0c527f3bb2a00fb388be8cab95ac9f2f5 100755
--- a/memory_app_classic.py
+++ b/memory_app_classic.py
@@ -46,7 +46,7 @@ class ClassicMemoryGame(threading.Thread):
         while self.running:
             if self.sounds_id_to_play_buffer:
                 sound = self.sounds[self.sounds_id_to_play_buffer[0]]
-                os.system(f"play {sound}")
+                os.system(f"play {sound}")  # Use sox to play sound
                 self.sounds_id_to_play_buffer.clear()
             time.sleep(0.1)