《兄妹》的詞曲都是由林夕和陳奕迅合作完成，由衛蘭演唱，是香港流行雙語歌曲之一。
中文詞版：
你係我個兄長 當日你離開咗 我個世界變咗
我唔係好懂事 還要你為我擔心
但是請你放心 我從來不會退縮
我們一定會做回好兄妹
過去的困難不會提 我總算明白 即使很難過 也無謂對錯
你有你今天 我亦有我 遠大前程 我要前往 對與錯 一念之差
應該相讓 不應該 偏要相爭
英文詞版：
You are my older brother when you left my world changed
I didn't grow up well I still need you to worry about me
But don't worry, I will never give up
We will definitely be good siblings again
The past difficulties are not mentioned I finally understand that it doesn't matter whether I'm sad or wrong
You have your today, I have my bright future that I need to go to
Right and wrong, it's a matter of choice
Shall we share? We shouldn't compete.
以上就是《兄妹》的詞曲和演唱者，是一首非常感人的歌曲，反映了兄妹之間的感情。