The History of Sound Recording Technology Historical articles, information, and commentary about audio recording technology. http://recording-history.org/index.php The CD's 25th Birthday The compact disc (CD) was introduced 25 years ago. Some thoughts on the history of the CD and where we might be going from here. http://recording-history.org/HTML/news/cd_turns_25.php http://recording-history.org/HTML/news/cd_turns_25.php