Federline: My children come first

Britney Spears' husband Kevin Federline is launching his debut album at the end of the month and is going on tour, but he insists his family is still his top priority.

The aspiring rapper and Spears have two sons together - Sean Preston, one and Sutton Pierce, who was born on September 12.

He also has two other children, Kori, four, and Kaleb, two, with actress Shar Jackson.

He tells US entertainment news show Extra: "Children come first."

Federline will release his debut album Playing with Fire on October 31 and will then test out his material in a series of live club shows, beginning on November 4 in New York City.

He claims his wife is his musical mentor: "She gave me comments about the music. She's helped me on the business side of it."

Federline also says his wife's jaw "about dropped" when she heard the finished version of his album.