What contestant from Britain's Got Talent was a guest vocalist on Johnny Mathis Christmas album titled Sending you a little Christmas?
Susan Boyle Susan Magdalane Boyle (born 1 April 1961) is a Scottish singer who came to international attention when she appeared as a contestant on the TV programme "Britain's Got Talent" on 11 April 2009, singing "I Dreamed a Dream" from "Les Misérables ".
Jermain Jackman Jermain Jackman (born 10 January 1995) is a British singer who won the third series of the BBC television singing competition "The Voice UK" in 2014. His debut album, "Jermain Jackman", was released on 23 March 2015.