A 16-inch lacquer disc, a format used in the 1930s, from the collection of the Library of Congress. Most of the lacquer, the part of the disc where the sound was etched, has been lost to decay. Abby Brack/Library of Congress hide caption

itoggle caption Abby Brack/Library of Congress

Janet Feder built a career on unusual instrumental guitar playing. Her new album, Songs With Words, will feature her singing for the first time. Courtesy of the artist hide caption

itoggle caption Courtesy of the artist

Bob Dorough circa 1960. Jon Sievert/Michael Ochs Archives/Getty Images hide caption

itoggle caption Jon Sievert/Michael Ochs Archives/Getty Images