Will.i.am Leaks Snippet of Britney Spears' 'Big Fat Bass'

Songwriter Defends Britney Spears For Not Demanding Co-Writing Credits

Will.i.am has leaked a snippet of another track from Britney Spears' "Femme Fatale" album, "The Big Fat Bass," on his dipdive.com website:

The Black Eyed Peas frontman posted the snippet along with a note addressed directly to Spears: "Thank you Britney for collaborating it was a pleasure working with you. Thank you for trusting my instincts. You're a doll," will.i.am wrote.

"I did this little art my self on my Mac," he continued. "I made it on the plane from Japan to L.A....I hope your Britney army likes it as much as we do."

"The Big Fat Bass" is the fourth song to be teased from Britney Spears' "Femme Fatale" aside from its lead single, "Hold It Against Me," which debuted at No. 1 on the Billboard Hot 100. Last week, the pop star previewed three other tracks helmed by the album's co-executive producer, Dr. Luke: "Inside Out," "I Wanna Go," and "How I Roll."

Britney Spears' 'Hold It Against Me' Debuts Atop Hot 100

Spears also announced last week that she'll perform a special concert on March 29, the same day "Femme Fatale" hits stores. The performance, which is set to take place in San Francisco, will be televised live on "Good Morning America."

Britney Spears Announces 'Special Concert'

on 'Femme Fatale' Release Day