books.google.ca - The Encylopedia of Recorded Sound, 2nd edition, is an A to Z reference work covering the entire history of recorded sound from Edison discs to CDs and MP3. Entries range from technical terms (Acoustics; Back Tracking; Quadraphonic) to recording genres (blues, opera, spoken word) to histories of industry...http://books.google.ca/books/about/Encyclopedia_of_Recorded_Sound.html?id=xV6tghvO0oMC&utm_source=gb-gplus-shareEncyclopedia of Recorded Sound
