What is the tonal range of the melody for Part of Me ?
According to the Barbershop Harmony Society ( BHS ) , " Barbershop music features songs with understandable lyrics and easily singable melodies , whose tones clearly define a tonal center and imply major and minor chords and barbershop ( dominant and secondary dominant ) seventh chords that resolve primarily around the circle of fifths , while making frequent use of other resolutions . "