On the cover: The circuitous and serendipitous story of folk supergroup I'm With Her - Sara Watkins, Sarah Jarosz and Aoife O'Donovan. Plus: the guitars of Coco, catching a break with Taylor's Andy Powers, seeking perfection with luthiers Mark Stutman and TJ Thompson, the enduring rockabilly legacy of Robert "Big Sandy" Williams, the Neapolitan mandolins of the Calace family, what musicians should know about loud music, more. 128 pp.