wave, punk, college rock, and grunge/alternative leanings, mostly in the 1980s. Classic rock – Developed from the album-oriented rock (AOR) format in the early 1980s. The classic rock format features music ranging generally from the late 1960s to the mid-1990s, primarily focusing on commercially successful blues rock and hard rock popularized in the 1970s AOR format. The radio format became increasingly popular with the baby boomer demographic by the end of the 1990s. See also Album era References Rock music genres Rock radio formats Rock