Nguyen Anh 9 started his songwriting career in a very accidental way when touring Japan with Khanh Ly. Nguyen Anh 9 played the guitar he was holding right away and sang: ""Không! Không! Tôi không còn, tôi không còn yêu em nữa..."" ("No! No! I'm no longer, I'm no longer in love with you..."). When coming back to Vietnam, Khanh Ly suggested he write this song. At her suggestion, he finished writing his first song in a short time.