黑白琴键弹不出的旋律
[hēi bái qín jiàn dàn bù chū de xuán lǜ]
The name 'A Melody That Cannot Be Played on Black and White Keys' refers to the piano keys being black and white. This name could suggest the complexity of one's mind that cannot be easily expressed through something simple and common like melodies played on a piano, implying a certain depth and intricacy to the inner feelings.