Who Do You Think You Are is an uptempo dance-pop song, with influences of the early '90s europop, and a disco–style beat that resembles the music of the late '70s.It is written in the key of F♯ minor, with a time signature set on common time, and moves at a fast tempo of 120 beats per minute. The inspiration for the lyrics comes from some of the people the group met in the music industry, and are about the presumptuous superstar life, and how someone can get trapped in the world of fame, much like the Temptations' 1971 classic Superstar (Remember How You Got Where You Are).