“There is no stage in the world that's too big for the music that you play on an acoustic guitar.”: John Mayer and Ernie Ball just co-designed a set of next-gen Earthwood acoustic guitar strings inspired by cymbals and bells

A still of John Mayer in the studio with a Martin 000 acoustic guitar.

Ernie Ball knows a thing or two about making acoustic and electric guitar strings but every now and then it is good to get a consultant in, just to see if it will spark some fresh inspiration, and for its new range of Earthwood strings it brought John Mayer onboard as co-designer.

The Earthwood Bell Bronze acoustic guitar strings, available now in a variety of gauges, are not signature strings. Mayer’s face is not on the packaging – we’re not too sure if his name is even on there, not even in the small print. But he helped steer the design, and is mighty proud of them.