No falsetto is used. Display according to query NetEase Cloud Music. Betrayal Lyrics: How about a tightly attached heart? Saygoodbye, you know better than me and I want to explain clearly that loving too deeply can make people crazy and brave. The lyrics are written by A Dan and Wu Yukang, and the music is composed by Cao Ge. A song sung by Cao Ge. This song is written for Grandpa Cao Ge. Cao Ge was brought up by his grandfather when he was a child, and he had a deep affection for him. This song is sung with real emotion and no falsetto.