Now That's What I Call Music! 53 is the 53rd edition of the Now! series in the United States. It was released on February 3, 2015. It features 21 tracks including the Billboard Hot 100 number-one hit "Uptown Funk" by Mark Ronson featuring Bruno Mars. Now 53 debuted at number 2 on the Billboard 200 chart with 99,000 copies sold in its first week. As of July 2015, the compilation has sold 451,000 copies.