 Complete the following phrase:  Mauboy is one of Australias most successful female artists. She has achieved six top-ten albums including two number-ones and 16 top-twenty singles including 9 top-ten hits. She has won two ARIA Music Awards from 25 nominations, and was ranked sixteenth on the Herald Suns list of the 100 Greatest Australian Singers of All Time. She has collaborated with international artists such as Flo Rida, Snoop Dogg, Ludacris, Jay Sean, and Pitbull. She has also toured with Beyoncé and Chris Brown, and performed at many notable events, including the Australian visits for Oprah Winfrey, Ellen DeGeneres, and US President Barack Obama. She was a guest performer at the second semifinal of the Eurovision Song Contest in 2014. She competed for Australia at the 