Bing Crosby's Innovations in Technology

Not only was Crosby a multimedia star, he advanced the technology to record music and make television --- such as the laugh track. Filmmaker Robert Trachtenberg describes how his crew was able to include in "American Masters - Bing Crosby Rediscovered" the private letters Crosby recorded on dictabelts. American Masters Executive Producer Michael Kantor adds perspective on Crosby's significance.