Though it leaked online in 2008, there was never much information about Britney Spears's cover of the Ace of Base classic "All That She Wants" — until now. Sitting down with ABC News for a career retrospective, Ace of Base front man Ulf Ekberg says the cover was recorded in 2007, but remained unreleased because it was a "difficult time" for Spears. Presumably, the song would have been included on Spears's 2007 album Blackout.
Elkberg says the track was done "only in Denmark" and "never finished and didn't end up on her album. It was cool though. She took the choruses, took away the verses and wrote new ones about her mom. It was very strong."
Here's the demo that has been floating around the internet for eight years: