Songfacts®:

• This floor-filler was produced by and also features Black Eyed Peas frontman and producer Will.I.Am. "Oh my God! Will.i.am is amazing," Spears said to radio host Ryan Seacrest of the producer. "He's so much fun and he's funny and he's a charm. His music is so much fun. When they told me I was going to be working with him, I couldn't wait. If it gets you going, you get excited, and he has that type of energy."
• Will.i.am told MTV News how he found Britney to be completely engrossed in the recording process. "[I discovered] her love for music. I never seen anyone, like, come alive, full of excitement and giggling and laughing behind the mic," he recalled. "She was like a little kid when she was recording the song and it just brought the whole atmosphere, it changed the whole atmosphere when someone really loves music. So it was great working with her."
  
  The BEP singer added that he didn't have much advice for Britney. "When someone's excited to go out and just do it, what advice? You don't need no advice. She's just turned on right now. She is [like], 'I like this part right here.' When I say [on the song], 'You all better get ready for the kick drum,' she was already anticipating what she was going to do onstage when that beat broke down," he explained."Adding that type of perspective ... when we we're recording it, you don't need to give nobody [like Britney] advice."