According to a 2008 B&A profile for ‘Cafe’, Britney had an unspoken rule about recording songs about her personal life, since she rejected ‘Sweet Dreams My LA Ex’ (which was a response to Justin Timberlake‘s ‘Cry Me A River’ eventually recorded by Rachel Stevens).
The duo wrote the song with Klas Åhlund, on a day when Britney Spears wasn’t able to make it into the studio due to the paparazzi chaos surrounding her. Even though it broke all of the rules set by Britney, they sent it to her and she loved it! She eventually showed up to the studio and knew all of the words, which she learned in the car on the way over. It turns out, the demo that she “loved” was sung by Robyn, whose backing vocals are still heard on the final album mix of the song.
Wow! Check out Robyn‘s version of Piece of Me above! Look like they killed the flute solo at the bridge!