Siblings Derek and Julianne Hough turned Bossier City's Horseshoe Casino into their own personal dance hall. The pair wowed a packed house stop on their MOVE Live tour June 7. But dancing isn't all the "Dancing With the Stars" alums did. They also performed one of radio's biggest recent hits: A Great Big World's "Say Something."

The brother-sister team sang the touching song on risers across from each other, while a pair of dancers performed a complex routine on the stage. The Hough siblings were dressed to match, with Derek wearing a blue coat and Julianne a long blue gown.

What do you think of their performance of "Say Something"? Let us know in the comment section.

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