Paul McCartney is getting ready to release a deluxe reissue of Flowers In The Dirt, a 1989 solo album that featured four songs that McCartney co-wrote with Elvis Costello. And those weren’t the only songs that McCartney and Costello worked on together. The two also got together on “Twenty Fine Fingers,” an often-bootlegged and never-released song. It’s a fast-driving number that features traces of skiffle and rockabilly, and it’ll finally see release on the reissue. On the song’s demo, Costello and McCartney sing the whole song together in close harmony, and it’s cool to hear both of their voices in a relatively lo-fi and immediate context. Check out the demo below.

The Flowers In The Dirt deluxe reissue is out 3/24 on Capitol.