RCA Records, Britney Spears’ label, has unearthed a previously unreleased track, “Swimming in Stars”, to celebrate the pop star’s 39th birthday.

Spears recorded “Swimming in the Stars” while working on her 2016 album, Glory. Written by Matthew Koma, Dan Book, and Alexei Misoul, the track is a synth-laden groove, featuring lyrics like, “So let’s go/Swimming in the stars tonight/And we’ll go/Shimmer in the diamond lights/We’ll dive in/Headfirst, all the way down/In gravity’s arms we’ll drown/The world is ours”.

Along with the digital release, “Swimming the Stars” will be available as a special 12-inch vinyl single exclusively at Urban Outfitters. According to a press release, the single will include other previously unreleased Spears tracks, as well as unreleased images. The record is available to preorder and will be available in UO stores tomorrow (December 4).

The release of “Swimming in the Stars” follows the release of “Mood Ring,” which had previously only been available on the Japanese deluxe edition of the album.

Meanwhile, the ‘Free Britney’ movement has been campaigning to get the pop singer freed from her conservatorship, which prevents her from making her own legal or financial decisions. The conservatorship, which is currently controlled by her father, Jamie Spears, grants control over much of her career, estate, finances, and personal life, and has been extended to at least 2021. Most recently, Spears told her attorney that she won’t perform again until her father is removed from the conservatorship.

Listen to the track below.