"Bang Bang" is an up-tempo, "soulful" song, that features a "clap-heavy" production, built over "big bouncy beats and horn blasts." The song mixes pop with Minaj's rap verses making it a hip pop song. It's in the key of C Mixolydian mode, with the vocals making use of the C blues scale. The tempo is 150 BPM (Allegro). The melody of the chorus has been compared to the melody of the first line of "Wake Me Up Before You Go-Go" by Wham!.
