Siegel, the longtime host of NPR's 'All Things Considered,' will retire in January after hosting for 30 years. We talk about his career in radio. Rock critic Ken Tucker looks back on the year in music. Also, filmmaker Jonathan Olshefski spent nearly 10 years filming Christopher "Quest" Rainey and his family, who run a recording studio in a working-class African-American neighborhood of North Philadelphia. Olshefski and Rainey discuss the film.