Run-D.M.C. backstage at the Grammy Awards in March 1987. The hip-hop group's 1986 album Raising Hell is one of 25 new inductees to the Library of Congress Recording Registry.
Hulton Archive/Getty Images
Frank Sinatra captured by photographer William "PoPsie" Randolph during a 1943 concert. Author Ben Yagoda points to Sinatra as one of the interpreters who helped revive the Great American Songbook.
William "PoPsie" Randolph/Courtesy of Riverhead