第一次听到这首歌是在《法证先锋2》中，一对夫妻因为这首歌相知相恋，到最后丈夫在即将放弃自己生命时听到这首歌唤醒他对妻子的爱，决定从新面对病魔努力生活。虽然最后他仍被害死，但是伴随剧情，这首歌真的是十分感人。
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Once upon a time,
An angel in the sky,
Made comfort every night,
Once upon a time,
The angel loved me so,
It's a miracle in the snow, my heart won't be cold
My dear,you are my angel,
Tell me what you know,
Something should be told
My dear,you are my angel ,
Tell me where you go,
I will breathe behind your love.
Once upon a time,
My agenl give me life!