mentor Simon Cowell was not in favor of the name 1432 and felt that the show's viewers could make a better name for the group. Judges' houses The judges' houses was filmed September 28 & 29, 2012. The judges received news of their categories from the producers by telephone, seen during the third bootcamp episode on October 10. Reid mentored the over 25s in Beverly Hills, California, assisted by Justin Bieber, accompanied by his manager Scooter Braun; Cowell took the groups to Miami Beach, Florida with Latin singer Marc Anthony, Spears had the teens in Malibu, California with The Black Eyed Peas member and The Voice UK coach will.i.am, and Lovato had the young adults in Los Angeles, with Jonas Brothers member Nick Jonas. {| class="wikitable plainrowheaders" |+Summary of judges' houses |- ! Judge ! Category ! Location ! Assistant(s) ! Acts Eliminated |- !scope="row"|Cowell | Groups | Miami Beach, Florida | Marc Anthony | Dope CrisisPlayback |- !scope="row"| Lovato | Young Adults | Los Angeles, California | Nick Jonas | Jillian JensenNick Youngerman |- !scope="row"|Reid | Over 25s | Beverly Hills, California | Justin BieberScooter Braun | Daryl BlackTara Simon |- !scope="row"| Spears | Teens | Malibu, California | will.i.am | Reed DemingJames Tanner |} Acts The top sixteen acts were confirmed as follows; Key: – Winner – Runner-Up Live shows The live shows began on October 31, 2012. This was the debut episode for Lopez and Kardashian as hosts on the show. Each week, the contestants performed on Wednesday, with the voting lines opening after the performances. As with previous season, each live show has a different theme. The live final took place on December 19 and 20. A recording of "Live and Let Die" by The X Factor UK series five winner Alexandra Burke featured on the second week of live shows. Each results show featured musical performances from at least two artists. There was no guest performer on the first result show. The second results show featured two performances from The X Factor UK series seven finalist One Direction, while Taylor Swift performed on the third result show.The X Factor UK series seven finalist Cher Lloyd and Becky G performed on the fourth results show. Week five included the premiering of a music video by will.i.am featuring judge Spears and performances from season one runner-up Josh Krajcik and Alicia Keys. Season one winner Melanie Amaro and