Đắn Đo (Wondering) was chosen to be head single. Before the release, Ha and her team kept revealing sneak peek of the song which made it appear on top search. However, the audience was somewhat disappointed once it was officially released due to its unique rhythm and lyrics. Ha herself claimed that Đắn Đo (Wondering) is not a catchy song and it needs time. She shared: "Lots of people wonder why I've chosen difficult paths this time, instead of the same old style; personally thinking, being safe in music is boring".
