John Mayer - Room For Squares (Book) Mic Stand This Soundhole plug mounts in

This Soundhole plug mounts in acoustic guitar sound holes from 3 7/8" to 4" diameter and helps reduce feedback in acoustic-electric guitars

and Violin tuning modes as well as selectable clip and microphone sensors

and Woody Shaw

made of Mahogany with white binding

Tip/Head Material: Nylon

John Mayer - Room For Squares (Book) Mic Stand This Soundhole plug mounts inSince the release of his major label debut, Room For Squares, in 2001, 25 year old singer songwriter John Mayer has become a full fledged phenomenon, slowly rising from obscurity to stardom, and doing it on his own terms. This album songbook is arranged in standard notation and guitar tablature.