Greatest Hits: Decade Number 1

Greatest Hits: Decade #1 is the first greatest hits double album by American singer Carrie Underwood, released on December 9, 2014, by Arista Nashville. The release contains every single from Underwood's first four studio albums: Some Hearts (2005), Carnival Ride (2007), Play On (2009), and Blown Away (2012), except "Some Hearts" from its album of the same name. Two newly recorded songs were included: "Something in the Water" and "Little Toy Guns". The album also contains four additional tracks.