From the January/February 2020 issue of Acoustic Guitar | BY ADAM PERLMUTTER On her latest outing, When You’re Ready, Molly Tuttle’s guitar plays a secondary role to the songs, but her six-string is front and center on “Super Moon,” a bright, dropped-D instrumental from her previous release, 2017’s Rise. Tuttle’s great facility and her inventiveness within the bluegrass tradition are…