From mandolins and banjos to ukuleles and handmade boutique guitars, the deep-blue walls of Riffs Studios always stay well stocked with strings. Inside comfy instruction rooms, the store’s teachers walk students of all skill sets through music theory, the fundamentals of their instruments, and tips for songwriting, performing, and demanding that roadies feed them grapes after each gig. Learning continues in another medium as yoga teachers lead students through outdoor meditative poses and series and on the colder days classes are conducted indoors, often while musicians set the mood with live music.