"I got a boy" is an electronic dance music with pop, nostalgia, city and other elements. It is composed of many different musical elements, including a few drums and bass, popular but steady electronic music, fashionable echo bass (a music form) and xylophone-like sounds. It sounds messy, but in fact, this song is constantly connecting the past with the future, and nine girls show it perfectly and harmoniously with wonderful voices. This is a bold attempt, but girlhood did create pop music that is very avant-garde for any country in the world. The theme of the lyrics is "girls' chatter", which humorously shows the scenes of girls chatting with friends in their daily lives.