 The duration of " Change " is four minutes and forty six seconds . Alexis Petridis of The Guardian described the song 's genre as a " kind of orthodontically perfect pop rock " . He said the most country part of the song were lyrics that referenced Catholicism with the word " hallelujah " . It is set in common time and has a moderate tempo of 100 beats per minute . It is written in the key of F major and Swift 's vocals span one octave , from F3 to B ♭ 4 . They were described to have a nasal tone when using her voice above mezzo forte . It follows the chord progression F – F / E – Dm – B ♭ . " Change " relies on a string @-@ swathed instrumentation . 
