"I feel like Britney kind of has her own genre: If you look at songs like 'Toxic' and 'Piece of Me' and 'Oops! ... I Did It Again,' they all were sort of influential and led the way," he told MTV News on Thursday (April 28) at the ASCAP Pop Music Awards.
So when the pair sat down to work on her latest release, Dr. Luke said her pop-music shape-shifting was very much on his mind. "She wanted to keep on with that and do stuff that was forward-thinking," he continued. "So we put some dubstep stuff in there, in bridges; snuck it in different places and I hope it ended up good. I hope you like it."
It seems every time Spears drops a new album, it's declared her comeback record. But Dr. Luke noted that Brit has really never gone anywhere. "Where'd she go? I don't know. I didn't know she ever disappeared, really," he said. "She's always been selling out concerts and records, so I don't know that she ever disappeared."
So what do Spears and Luke have up their sleeve now? "Not yet ... give me a second to breathe, come up for air!" he told us.
Plus, even with Femme Fatale already in stores, it seems like the pair are always finding ways to update the songs. Take, for example, the recent remix of "Till the World Ends," which features Ke$ha (the track's songwriter) and Nicki Minaj.
"Well, we already had Ke$ha on the song 'cause she co-wrote the song ... and she sounded really good on it," Dr. Luke explained. "And then Nicki got on the Femme Fatale Tour so we put Nicki on it and it just sounded amazing. She killed it."
Which version of "Till the World Ends" do you prefer? Tell us in the comments!