For Mandarin : 
《她来听我的演唱会》 by 张学友（Jacky Cheung） 
The lyric of the song is impressive 
music link : 
http://www.kugou.com/song/#732EF5928CC89FAD4491CA6E03C0D624 ;

For Cantonese : 
《伤逝》 by 叶倩文(Sally Yeh) 
music link : 
http://www.kugou.com/song/#3EEF65501496CB63B252B07DB25F4B8C ;


Enjoy the music !