 The song is associated with dance @-@ rock , pop rock and teen pop with a slight country twang . Electric guitars and synths are also used . Near the start , the song begins to make a beat of paparazzi 's flashbulbs . It is set in common time with a moderated tempo of 120 beats per minute . The song is written in the key of A minor . Cyrus ' vocals span two octaves , from A3 to C5 . The song has the following chord progression , A5 — C5 — D5 . 
