《Bang Bang》is a song performed by Jessie J/Ariana Grande/Nicki Minaj, with music composed by Max Martin/Savan Kotecha/Rickard Goransson/Onika Maraj, with lyrics by Max Martin/Savan Kotecha/Rickard Goransson/Onika Maraj, tonality C.
This is staff notation, Click here to view jianpu(numbered notation).