ðɪ ɚɹˈɪdʒɪnəl lˈaɪnˌʌp kənsˈɪstᵻd ʌv fˈɔːɹmɚɹ ɔːstɹˈeɪliən ˈaɪdəl kəntˈɛstənts, ɪŋklˈuːdɪŋ sˈiːzən wˈʌn fˈaɪnəlˌɪst pɔːlˈiːni, sˈiːzən tˈuː fˈaɪnəlˌɪst ɹˈɪkilˈiː kˈoʊltɚ, sˈiːzən θɹˈiː wˈɪnɚ kˈeɪt də æɹˈɔːɡoʊ ænd sˈiːzən θɹˈiː ɹˈʌnɚɹˌʌp ˈɛmᵻli wˈɪljəmz.
The original line-up consisted of former Australian Idol contestants, including season one finalist Paulini, season two finalist Ricki-Lee Coulter, season three winner Kate DeAraugo and season three runner-up Emily Williams.