Ann Wilson uses a custom Martin with a heart-shaped soundhole and star-constellation inlays for “These Dreams” and “Dog & Butterfly.” Her backup acoustic is a graphite Rainsong with Fishman Prefix electronics.

Premier Guitar’s Shawn Hammond met with Ann and Nancy Wilson’s guitar tech, Jeff Ousley, lead guitarist Craig Bartock, and bassist Dan Rothchild before Heart’s show at the U.S. Cellular Center in Cedar Rapids, Iowa, on March 21, 2015. Ousley—who’s been maintaining the Wilson sisters’ gear (and making them mean cups of coffee) for more than 20 years—walked us through everything from Ann’s custom Martin acoustics to Nancy’s vintage SG and Tele, while Bartock and Rothchild shared their cool customized instruments.