Exploring the music that kept the spirit of the civil rights movement alive following Martin Luther King Jr.'s death.
Following the terrorist attacks on September 11th, songs like Billy Joel's "New York State of Mind" took on a new and heightened meaning and politically charged country music took center stage.
Following the killings of four Kent State University students during anti-Vietnam War protests, politically driven songs from Neil Young, Buffalo Springfield and others became popular.
Following Hurricane Katrina, international artists from U2 to Kanye West joined New Orleans musicians in benefit concerts to help ensure the city's rich traditions survived.
Charting the course of the Cold War in Berlin through music revealing how it helped to sow the seeds of rebellion.
Neil Armstrong and Buzz Aldrin's moonwalk inspired musicians from David Bowie and the Byrds to Parliament-Funkadelic and Sun Ra to imagine a cosmic future for mankind.
Pat Benatar
Self
Anderson Cooper
Melissa Etheridge
Dan Rather
Smokey Robinson