 "Who's That Girl" employs this effect on the last chorus where three or four different vocal hooks are intertwined.In his book "The Complete Guide to the Music of Madonna", author Rikky Rooksby explained that the song was Madonna's best take on her original music style.Stephen Thomas Erlewine of Allmusic commented that "Who's That Girl" along with "Causing a Commotion" were not amongst Madonna's best singles.