Released on November 10, 2009 , The Singles Collection was Britney Spears’ second major greatest hits album (following 2004’s Greatest Hits: My Prerogative ). Conceived as a career-spanning box set to celebrate her ten years in the music industry, it compiles her official single releases from 1998 to 2009. The collection was released in two main formats: a standard 1-disc edition (17 tracks) and a deluxe 2-disc box set (29 tracks plus bonus remixes and a DVD of music videos).