Richard Purcell is Assistant Professor at Carnegie Mellon University, USA. He is author of Race, Ralph Ellison and American Cold War Intellectual Culture (Palgrave 2013).Richard Randall is Cooper-Siegel Associate Professor of Music at Carnegie Mellon University, USA. His recent publications include Similarity Measures for Tonal Models (2006) and Lerdahl's Tonal Pitch Space Model and Associated Metric Spaces.

• Introduction: Listening in on the 21st Century; Richard Randall and Richard Purcell1. The Scream and Other Tales: Narrating Detroit Radio History with the Vertical File; Carleton Gholz2. On Tape: Cassette Culture in Edinburgh and Glasgow Now; Kieran Curran3. Radio in Transit: Satellite Technology, Cars, and the Evolution of Musical Genre; Jeffrey Roessner4. The Internet and the Death of Jazz: Race, Improvisation, and the Crisis of Community; Margret Grebowicz5. A Brief Consideration of the Hip-Hop Biopic; Richard Purcell6. Love Streams; Damon Krukowski7. A Case for Musical Privacy; Richard Randall8. Digital Music and Public Goods; Graham Hubbs9. The Preservation Paradox; Jonathan Sterne10. Headphones are the New Walls: Music in the Workplace in the Digital Age; Kathy Newman11. Researching the Mobile Phone Ringtone: Towards and Beyond The Ringtone Dialectic; Sumanth Gopinath