The X Factor S6, E20

Four celebrity singers look among the public lf Australia, in a bid to discover who the next music sensation will be.

Cast:Guy Sebastian , Luke Jacobz , Ronan Keating , Mel B , Natalie Bassingthwaighte , Kyle Sandilands , Natalie Imbruglia , Daniel MacPherson , Mark Holden , Kate Ceberano , John Reid , Reece Mastin , Johnny Ruffo , Andrew Wishart , Three Wishez , Declan Sykes , Samantha Jade , Christina Parie