Guy Theodore Sebastian is an Australian pop, R&B, and soul singer-songwriter. He was the first winner of Australian Idol in 2003, and was a judge on Australia's The X Factor between 2010 and 2012. Sebastian has released seven top ten albums including two number ones, which have all gained either platinum or multi-platinum certification. He has also achieved 12 top ten singles, including six number ones. Sebastian is the only Australian male artist in Australian chart history to achieve six numbe...
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