Pioneering icons of music, and two-time Rock and Roll Hall of Fame Inductees, David Crosby, Stephen Stills and Graham Nash made a brief stop on their 2013 European tour to discuss their most recent live album and film CSN 2012, their incredible career as a legendary supergroup and their newly released iPad app the Crosby, Stills & Nash Official App. Moderated by Peter Radszuhn at the Apple Store, Kurfürstendamm in Berlin.