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Jan 4, 2015 · we all love Alex and Sierra don't we? Here's a playlist of all their performances in order :) ENJOY! :)
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The X Factor Couple and Duo, Alex and Sierra, give On The Fly an exclusive performance of their single "Scarecrow".
Alex & Sierra. Alex & Sierra were an American duo consisting of Alex Kinsey (born September 8, 1991) and Sierra Deaton (born February 11, 1991), who won the third and final season of The X Factor US. They were mentored by Simon Cowell. Their debut album It's About Us was released on October 7, 2014, on Columbia Records. [3]