In no particular order:


Harry Chapin
Bruce Murdoch
Steve Knightley
Ron Bankley
Bruce Cockburn
Martyn Joseph
Loreena McKennitt
Dougie McLean
Reg Meuross
Bruce Springsteen
The Oysterband (collectively or individually)
Jez Lowe
John Tams
James Keelaghan
Oliver Schroer (whose violin sang Oliver's words)
John Denver
Stephen Fearing
Ashley Hutchings
Dave Gibb
Noah Zacharin
Tom Palmer
Mike Silver
Joni Mitchell
Vinnie James
Emmy Lou Harris
Fred Small
Shania Twain
Gordon Lightfoot
Sandy Denny
Richard Thompson
John Mayer


...just for starters..