Chart Beat Podcast: Ranking the 14-Week No. 1s, From Boyz to Bruno to Bieber

"Despacito" joins seven other songs that led for 14 weeks, the second-longest command in the chart's history. A look back at their reigns, plus former "American Top 40" staffer Sandy Stert Benjamin stops by to remember recording the show this week in 1977 after Elvis Presley died.