《孤單的總和》的歌詞如下：
你總是笑著看我
無法抵抗你的魔力
可你不知 我的心跳
在你不知道的秘密
隨著你的喜怒哀樂
總是隨著你的行動
你總是 忽遠忽近
讓我無法捉摸不定
我總是 默默承受
你總是讓我孤單的總和
愛情總是讓人失控
為了愛 我願意等候
愛情總是讓人盲目
為了愛 我願意受苦
我總是 默默承受
你總是讓我孤單的總和
愛情總是讓人失控
為了愛 我願意等候
我等待著 你的回眸
我等待著 你的溫柔
我等待著 你的回頭
哪怕一次 就已足夠
以上歌詞為意譯版本，英文版本歌詞如下：
You always make me laugh, and I can't resist your magic.
But you don't know that my heart beats, and your secret is unknown to me.
With your emotions, your happiness and sorrow, always follow your actions.
You always keep me distant or close, making me unable to grasp.
I always silently suffer from your indifference.
Your game of hiding and seeking always leaves me with loneliness.
Love makes people lose control. For love, I'm willing to wait.
Love blinds people. For love, I'm willing to suffer.
I always silently suffer from your indifference.
Your game of hiding and seeking leaves me with loneliness.
Love makes people lose control. For love, I'm willing to wait for you.
I'm waiting for your glance, your warmth, your return.
I'm waiting for a single moment, and it will be enough for me.