B in the Mix: The Remixes Vol. 2 is the second remix album by Britney Spears, released on October 7, 2011 by RCA Records. On September 9, 2011, Spears announced the release by posting the cover art and track listing on her Tumblr. The album includes remixes of various tracks from each of her albums Blackout (2007), Circus (2008) and Femme Fatale (2011), as well as a remix of 3 .
The remixes were done by DJs such as Kaskade, Tiлsto and Benny Benassi. The music was influenced by various genres of pop music, such as dance-pop and pop rock.

In the Zone is Britney Spears fifth DVD collection, which was released on April 6, 2004. The performances in the DVD were dubbed by the recordings featured in the album.