who Say's by Selena Gomez

 The song "Who Says" is sing  by American band  The Scene and  Selena Gomez . The song was released in March of 2011 as the lead single from the band's currently untitled third album. It debuted at position 24 on the US Billboard Hot 100 and 17 on the Canadian Hot 100 making it the band's biggest debut as of March 2011 and their highest charting single on the Canadian Hot 100. "Who Says" is the band's fourth consecutive song to debut inside the top 40 on the Billboard Hot 100. The song has been performed so far on The Ellen DeGeneres Show and Dancing With The Stars, having its first live performance at the 3rd annual Concert For Hope.