键盘敲不出我的伤钢琴弹不出我的泪
[jiàn pán qiāo bù chū wŏ de shāng gāng qín dàn bù chū wŏ de lèi]
The sorrow or pain of the person is so deep and intense that it cannot be expressed by simply typing on a keyboard or playing a piano. These are metaphorical ways of saying one's emotional experiences can't be fully conveyed through words typed out or notes played.