Now That's What I Call Music! 40 was released on November 8, 2011. The album is the 40th edition of the Now! series in the United States. To celebrate the release of its 40th disc, two versions were released: the standard edition containing "16 of the hottest tracks from the last few months", including the Billboard Hot 100 number-one hit, "Moves Like Jagger", and a two-disc Deluxe Edition set that "includes all the hits in the standard set, as well as the greatest hits from the last several years featured on previous sets." Also included on the second disc are two songs not featured on prior Now installments - but still reached the top 5 of the Billboard Hot 100 - "Low" by Flo Rida and "Cry Me A River" by Justin Timberlake.