1. Electrical Analog Recording (1925)2. Wire Recording (1940s)3. Tape Recording (1950s)4. Disk Speeds (45 v. 33 1/3)5. High Fidelity6. Stereo Recording (1950s)7. Multitrack Recording (Sound-on-Sound,

Sound-with-Sound)8. Tape cassette9. Noise reduction (Dolby, dbx)10.Portable playback (Walkman)

•The Talkies and the Music Recording Industry: The role of AT&T, RCA and Western

Electric

•The Talkies and the Music Recording Industry: The role of AT&T, RCA and Western

Electric•The Crooners: Popular Music and Culture

•The Telephone, The Talkies and the Music Recording Industry: The role of AT&T, RCA, and Western Electric

•The Crooners: Popular Music and Culture•Jazz as the American Music: Big Bands and

Swing•Record Stores and Radio Stations: The Promotion and Selling of Popular Music Recordings•Recorded Music on the Margins: Hillbilly, Race, and Ethnic Music•Rock ‘n’ Roll and the Birth of the Teenager