Radio format is a term used to describe the type of music or content that is broadcasted on the radio. OLDIES, ROCK, TALK, RAP, Topforty, and Easylistening are all examples of radio formats. OLDIES refers to popular music from the 1950s to the 1980s. ROCK is a genre of music that originated in the 1950s and is characterized by a heavy beat and electric guitar riffs. TALK radio is a format that focuses on discussion and interviews rather than music. RAP is a genre of music that combines spoken word with a rhythmic beat. Topforty is a radio format that plays the most popular songs of the moment. Easylistening is a radio format that plays light instrumental music.