Ernie Ball - John Mayer uses Ernie Ball Earthwood phosphor bronze acoustic guitar strings to create his acoustic guitar tone. Do you? Join the legacy. ernieball.com #iplayslinky | Facebook
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NAMM 2020: Martin collaborates with Eric Clapton, John Mayer on Crossroads guitars | Guitar.com | All Things Guitar
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Duet with John Mayer on TikTok, with his new karaoke version of Stop This Train | Guitar.com | All Things Guitar
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