Britney Spears released her new single, "3," on Tuesday morning (September 29). The song will be featured on her greatest hits album, The Singles Collection, due out on November 24. She's releasing the collection to celebrate her 10 years in the business since the release of her seminal first single, "... Baby One More Time."

The track was produced by hit-maker and longtime Spears collaborator Max Martin, who also produced "... Baby One More Time," and its subject matter — which appears to be about loving multiple people at one time — is sure to cause a stir. Of course, Spears has been causing that kind of stir since she dressed in a sexy school-girl uniform for the "... Baby One More Time" video.

The song, which is posted on New York radio station Z-100's Web site, is a catchy dance track with provocative lyrics, such as, "1, 2, 3/ Not only you and me/Got 180 degrees/ And I'm caught in between." The chorus also mentions "Peter, Paul and Mary," which would seem to be an out-of-left-field reference to the '60s folk act. (There's no indication whether this song was recorded before or after member Mary Travers' death on September 17.)

In July, during the European trek for her Circus tour, Spears tweeted that she was working with Martin on a song. "Back in the studio with Max!" she wrote about the collaboration.

The Singles Collection will be available for purchase as a standard set and a packaged box set. The standard set will include 17 of her biggest hits, plus "3." The ultimate fan box set will contain all 29 of Spears' singles individually packaged in slip sleeves with their original artwork and B-sides or remixes. The box set will also include a DVD with all of Brit's videos from past to present and a photo booklet with various photos spanning her career. Spears released her first greatest-hits collection, My Prerogative, back in 2004.