A 1963 demo recording of David Bowie’s first band, the Konrads, has been unearthed by the band’s drummer, and is expected to fetch big money at an upcoming auction.

David Hadfield found a copy of “I Never Dreamed” in a bread basket in his garage while in the midst of a move in the ‘90s, and kept its existence secret until now. The demo is expected to go for $13,000 at auction.

You can listen to a 12-second snippet of “I Never Dreamed” below.