OTR stands for Old Time Radio. Old Time radio shows were popular during the early to mid 20ths century and there was a radio set in almost every home in America. Classic radio recordings are highly entertaining for both old and young listeners.
The term old time radio encompasses radio recordings made usually between the mid 1920's through 1960. This "golden age of radio" included all genres of amazing recordings which were frequently performed live by top name performers.
Although much of radio history was lost (never recorded), existing episodes still in circulation were primarily stored by fans or sponsors of the program on transcription disk or reel-to-reel tapes. These recordings are encoded (converted from analog to digital format) from their original media into MP3 format for easier collecting, playback, and listening.
Old Time Radio shows are a varied group of people. Some otr fans listened to old time radio shows when they were first broadcast decades ago. However, there is a new generation of old time radio listener who is just now listening to classic old time radio recordings.