SNAMM '17 - Martin D-18 Jason Isbell Demo Jason ShadrickJuly 14, 2017VideoThe Grammy winner takes a few minutes to go over his signature flattop and even does a bit of picking.gearvideossnamm-2017jason-isbellgear-show-demoguitarsmartinspruceacousticwhats-newElectric GuitarsGearAcoustic GuitarsNAMMVideosReviewsAcoustic