- June Carter Cash
- Willie Nelson
- Kris Kristofferson
- Merle Haggard
- George Jones
- Rosanne Cash
- Rodney Crowell
- Paul McCartney
- Bono (of U2)
- The Edge (of U2)
- Leonard Cohen
- John Mellencamp
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- Raul Malo (of The Mavericks)
- Dave Matthews
- Tom Waits
- Chrissie Hynde
- Keith Richards
- Tom Petty
- Elvis Costello
- Ray Davies
- Nick Lowe
- Sam Shepard
- Billy Bob Thornton
- Matt McDonough (of Mudvayne)
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- Shawn Crahan (of Slipknot)
- Corey Taylor (of Slipknot and Stone Sour)
- Kirk Hammett (of Metallica)
- Henry Rollins
- Shelby Lynne
- Al Gore
- Nick Cave
- Trisha Yearwood
- Steve Earle
- Tim Robbins
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