I came across an audiocassette by Caedmon & Collins with fragments of The Hobbit and The Fellowship of the Ring, one with Two Towers and Return of the King material and one with Poems and Songs from Middle-earth both with a Garland covers. Since I'm tracking down all the Tolkien Covers Garland did, I was wondering if there are any more out there?

Did any Garland illustrations end up on vinyl or cd as well?

Thank you very much in advance.