The duo Alex & Sierra was formed in 2007. They came third in the final season of the US X Factors
Alex and Sierra first emerged in The X-Factor. They became a winner and debuted with Columbia Records, creating two albums ever since. Even with promising career, the duo had to break up since they announced that the two were no longer together in actual relationship.
Little Do You Know
I Love You
Bumper Cars
Winner - The X Factor Season 3 - 2013