Alex & Sierra won the third season of "The X Factor," beating Jeff Gutt and Carlito Olivero, who were mentored by Kelly Rowland and Paulina Rubio respectively. Country singer Tate Stevens was the champion of the second season, while Melanie Amaro took the title during the premiere season.
Alex Kinsey and Sierra Deaton were a singing duo and couple mentored by Simon Cowell for the last season of "The X Factor." They chose "Say Something" by A Great Big World as their final performance song. They went on to sign with record labels Columbia and SyCo Music.
Tate Stevens was mentored by Antonio M. "L.A." Reid, the chairman and CEO of Epic Records. After Stevens won the show, he released an album through RCA Records Nashville. During the same season, girl group Fifth Harmony took third place. It is considered the most successful act to be produced by the show after winning several awards, scoring three platinum singles and selling more than 3.5 million singles in the United States.
Melanie Amaro was crowned the winner under the mentorship of Cowell. She was initially eliminated during an earlier stage but Cowell changed his mind and brought her back. She polled first in half of the eight live shows and released multiple promotional singles after winning the contest.