Rolling Stone uncovered a recent interview with Led Zeppelin frontman Robert Plant where the singer reveals he has unearthed some previously unreleased Led Zeppelin recordings.

“I found some quarter-inch spools recently,” he said. “I had a meeting with Jimmy [Page] and we baked ‘em up and listened to ‘em. And there’s some very, very interesting bits and pieces that probably will turn up on these things,” Plant said about the recordings. The recordings include tracks featuring Zeppelin bassist John Paul Jones on lead vocals. There is no current release date scheduled for the remastered catalog.