History of Rock Music
Wolfman Jack "coined" the term. No matter where the word originated the music is here to stay. Early rock music has little resemblance to what we now call rock, it started as a hybrid of what was considered black and white musical forms.
The first generation of rock is looked back as rockabilly. Its stripped drums, twangy guitars and walking bass lines proved infectious to the teenage masses. The first generation to widely have cars as teenagers were also the first generation to experience "youth culture". Before this parents and children often listened to the same music, the parents didn't get "it".
A surprising fact is that rock music was mainly a social dance music during its original incarnation. This all changed as acts became larger and old fashioned rock and roll gave way to psychedelic rock. The hippies took over with equal parts folk and acid rock. By the 70's Progressive rock came into popularity while groups such as Black Sabbath split off and formed the basis of heavy metal.
In 1978 something unexpected happen. Van Halen debuted ushering in a new form of pop metal hybrid. Some refer to this as hair metal. Around this time punk rock was brewing in the New York underground at venues such as CBGBs.