When did The X Factor Season 12 Episode 4 air?
The X Factor Season 12 Episode 4 aired on September 6, 2015.

Caroline Flack and Olly Murs present further coverage of the audition process, as another batch of applicants perform in front of judges Simon Cowell, Cheryl Fernandez-Versini, Nick Grimshaw and Rita Ora, as well as an arena audience of thousands, in the hope of winning one of the coveted places at the Boot Camp
Direct answers for episode-level questions and details.
The X Factor Season 12 Episode 4 aired on September 6, 2015.
This episode runs for approximately 60 minutes.
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