Only Boys Aloud will perform on The X Factor final weekend, on Saturday December 8.
The 140 strong choir from the Welsh Valleys are best known for achieving huge success on ITV1's hit show Britain's Got Talent 2012.
They will release their eponymous debut album through Relentless / Sony Records on December 3; a stirring collection of traditional Welsh songs and choral versions of more contemporary tracks including Coldplay's 'Paradise'.
A special Christmas edition of the album will also include 6 beautifully arranged versions of traditional festive numbers, including 'A Fairytale Of New York' which features a duet with Eastender's Rita Simons and comedian Jason Manford.
They have also announced a UK tour in April 2013:
Tue 02-Apr-2013 - Manchester Bridgewater Hall
Wed 03-Apr-2013 - Gateshead Sage 1
Thu 04-Apr-2013 - Birmingham Symphony Hall
Fri 05-Apr-2013 - Ipswich Regent
Sat 06-Apr-2013 - London Cadogan Hall
www.onlyboysaloud.com