請確認與其它喇叭同主題且同時播放。
Make sure to play the same theme and at the same time as other speakers.
提示：最後的鋼琴旋律有完整出現所有音高。
Hint: The piano melodies of the last part introduce all the pitches
Note: 此答案為終極密碼的第一個數字。 This answer is the first digit of the final password.