Rihanna's vocal range should be compared those of Britney spears, Keysha, Madonna, Jant Jackson, Ciara, Cassie, and Soulja Boy. Sam if ever u try comparing Riri w Beyonce then im ge very dissapointed in u. We all know that Rihanna is a average artist. Very low vocal range. She ALWAYS avoids her high notes everytime that she performs n the "high" notes r nothing but shouting to begin with. Sam u better not make such a blunder ever again!!