guy theodore sebastian (born 26 october 1981) is an australian singer and songwriter. he was the winner of the first "australian idol" in 2003. he represented australia at the 2015 eurovision song contest, finishing in 5th place. sebastian has released nine top ten albums, including two number ones. he has 22 top twenty singles, with 13 reaching the top ten, including six number ones. his first single "angels brought me here" was the highest selling song in australia in the decade 2000 to 2009. "battle scars", featuring lupe fiasco, spent 20 weeks on the us "billboard" hot 100 chart, peaking at number 71. the single has been certified 11× platinum.