Room audition song: Listen by Beyoncé
Arena audition song: Who's Loving You by The Jacksons
Bootcamp audition song: Clown by Emeli Sande
Judges' Houses audition song: I Have Nothing by Whitney Houston
Our favourite moment: When Sam received a standing ovation from the judges in her very first audition. It would soon become the norm as Sam impressed week after week, with judge Gary Barlow calling her talent "stratospheric".
Facts: Sam is married and has two adorable children, but she joined the competition feeling it was her time to do something for herself.