Demi Lovato

Demi Lovato is an American singer, songwriter, musician, and actress. In 2011, her single "Skyscraper" reached #2 on JT40, briefly interrupting Adele's top 2 domination at the time. In May 2013, thanks to an unexpected extremely positive reception to her fourth studio album Demi, Demi earned her first JT40 #1 with "Heart Attack". She has since earned a total of three #1s on JT40.