There is more than one artist with this name: 1) RIO (りお) is a Japanese idol and AV star. She is a former member of the group Ebisu Muscats. She made her solo debut under Victor Entertainment on December 4th, 2013, with the single "I'm Sexy ~Da Ya Think I'm Sexy?~"
Official Website | Official Blog 2) RiO (www.riotheband.com) is a Pop / Rock / Electro 5 piece band from Essex made up of:
Charley Bagnall - Guitar and Vocals
Sam Bell - Guitar and Vocals
Mark McKeeganey - Bass