"It's So Hard to Say Goodbye to Yesterday"是由Lionel Richie和Diana Ross共同創作的歌曲，是電影《霹靂舞》的主題曲。以下是這首歌的歌詞：
Verse 1:
I'm standing on a bridge 我站在橋上
The clouds are painted black 烏雲密布
I'm feeling so unsure 我不再感到迷茫
Feels like the whole world's gone a bit crazy
感覺就像整個世界都變得有點瘋狂
Chorus:
But it's so hard to say goodbye to yesterday
但很難說再見昨天
The words come out so wrong 言語之間總是顯得錯亂
The thought of tomorrow 想到明天
Just seems too hard to face
只是顯得太過艱難而無法面對
Verse 2:
It's been a long day 漫長的一天
And I don't know what to say 我不知道該說什麼
But if I lay here 但我躺在這裡
Feels like I'm missing out on something
感覺就像我錯過了什麼
Chorus:
But it's so hard to say goodbye to yesterday
但很難說再見昨天
The words come out so wrong 言語之間總是顯得錯亂
The thought of tomorrow 想到明天
Just seems too hard to face
只是顯得太過艱難而無法面對
Bridge:
I'm holding on forever 我永遠堅持著
But I don't know why 我不知道為什麼
I keep going back for more 我一直回去追求更多
And it's such a drag, drag, drag 真是太重了
Chorus:
But it's so hard to say goodbye to yesterday
但很難說再見昨天
So here I am today, saying goodbye 我今天也說了再見，留下空白和破碎的心和無情的雲朵 霧霾中漂浮著孤單的回憶 無法逃避昨天的陰影和遺憾，也難捨那些過去的美好，更不想讓自己沉浸在過去的悲傷中。但是，生活總要繼續，我們必須勇敢地面對未來，放下過去，重新開始。
Outro:
It's time to let go 是時候放手了
And face the world alone 獨自面對這個世界吧。