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Guest judge Katy Perry helps Simon Cowell, Cheryl Cole and Louis Walsh select the best solo singers and groups in Dublin as the auditions move to Louis's native Republic of Ireland for the first time since 2006.
First Air Date : Sep 04, 2004
Last Air date : Dec 02, 2018
Episode : 423 Episode
Season : 15 Season
Runtime: 26:14 minutes
Studio: ITV1
Country: United Kingdom
Crew: