Podcast:Popcast Published On: Fri Dec 19 2014 Description: Ben Ratliff, Jon Pareles, Jon Caramanica and Nate Chinen discuss pop music’s dominant themes, lessons and preoccupations in 2014. Unlock full access to New York Times podcasts and explore everything from politics to pop culture. Subscribe today at nytimes.com/podcasts or on Apple Podcasts and Spotify.