"The Voice UK" is a singing contest in which artists audition for four coaches who sit with their back towards them so that they are judged on their voices alone. The coaches only have limited places on their team, so each one has to carefully select the voices they want to work with. If more than one coach shows an interest in an artist, the power shifts to the person singing who are then able to select their mentor. Once the coaches have chosen their teams, they pit two of their own acts against each other to sing a competitive duet in front of a studio audience. The coach must then choose which artist will go through to the live shows and which to send home. By the end of the battle rounds the coaches will be left with five singers each to take to the live shows. All of the remaining artists then compete against each during the live shows and phone lines open for the public to vote for their favourites. The one voice left standing at the end of the competition will win a recording contract. For the first two series, the show was presented by Holly Willoughby and Reggie Yates, and the coaches were Jessie J, will.i.am, Danny O'Donoghue and Tom Jones. For the third run, Jessie J and Danny O'Donoghue were replaced by Kylie Minogue and Ricky Wilson, and Emma Willis and Marvin Humes took on presenting duties. Based on a popular American format, the UK version premiered on BBC One in March 2012.