Prince’s vault is being opened again.

A new album of unreleased music from the singer will be released in September, Troy Carter, whose Atom Factory oversees Prince’s estate, told Variety.

“Michael Howe, who’s been working with us on the archive, has done a tremendous job of finding some special pieces of work, and one of the pieces that he found, all of us fell in love with it and decided this was special enough for fans to hear,” Carter said.