The "classical" section of Allmusic.com lists the following recordings of Yeats' LAKE ISLE OF INNISFREE. Warning: these recordings are likely to sound more "arty" than "folky."

Composer – Singer, "Album Title" (Date of Album)
Granville Bantock – Saint Louis Chamber Chorus, "A Pageant of Human Life: The Choral Music of Granville Bantock" (2008)
Eleanor Daley – Elekra Women's Choir, "Elektra's Garden" (2009)
Brian Blyth Daubney – William Berger, "October Roses: Songs by Brian Blyth Daubney"
John Downey – Daniel Nelson, "John Downey Plays John Downey" (1999)
Mary Howe – Sandra McClain, "Love's Seasons"
Brian Knowles – John Christos, "Poetry Serenade" (2008)
Philip Martin – Penelope Price Jones, "Philip Martin Songs" (1994)
Alec Wilder – Valerie Errante, "Songs of Alec Wilder" (2000)