Did technology change music? Of course it did. In “Rocketman” the musical film based on the collaborations of Elton John and Bernie Taupin the viewer is treated to a behind the scenes glimpse at the spectacle of an Elton John concert. And we have become. so accustomed to the technology that allows us to separate and then recombine the audio and visuals components of music that we no longer see that as anything remarkable. But in his book, “Capturing Sound How Technology has changed Music” Prof. Katz considers the changes GUEST: Prof. Mark Katz, University of North Carolina and author of Capturing Sound: How Technology Has Changed Music and Build: The Power of Hip Hop Diplomacy in a Divided World.