Britney Spears on music and motherhood

Britney Spears is about to release her new single.

The singer is also preparing for a Las Vegas residency at the Planet Hollywood Resort. In a show titled "Britney: Piece of Me," Spears will perform 50 dates over two years,

The 31-year old, who has two sons, talks about balancing motherhood with her music career and why she loves visiting the UK.