Magazine writer Dan Moskowitz has, for more than a decade, tapped his avocational interest in American popular music to lead study groups in the subject at the OLLIs at American University and George Mason. The Library of Congress maintains a national registry of recordings that show the "range and diversity of America," reaching from Edison recordings to the original cast album of Hamilton. We'll hear selections from the 600 titles now in the registry, discuss the role they played in shaping our country, and perhaps add a memory of the impact the piece had on our own lives. Each session will be devoted to a specific genre—pop, jazz, folk, classical, etc.—with the emphasis on recent additions to the registry.