Orianthi (born Orianthi Panagaris 22 January 1985) is an Australian Musician, singer-songwriter and guitarist. She is perhaps best known for being Michael Jackson's lead guitarist for his ill-fated This Is It concert series. Her debut single "According to You" has peaked at No. 8 in Australia and No. 17 in the US; her sophomore album, Believe, received a worldwide release in late 2009.