Summary: Nielsen Music's Dave Bakula chats with Billboard co-directors of charts Keith Caulfield and host Gary Trust about how Nielsen has tracked music consumption for a quarter-century. Also: a countdown of the five best-selling albums in the U.S. of the past 25 years. <br><hr><p style="color: grey;">See <a style="color: grey;" target="_blank" rel="noopener noreferrer" href="https://acast.com/privacy">acast.com/privacy</a> for privacy and opt-out information.</p>
