On the History of Rock Music follows the development of rock music from its origins up to the present time.It focuses on the relationship between the sound, improvisations and rhythms in particular styles, and gives specific attention to the development of rhythm.The beat-offbeat principle, polyrhythms and polymetrics are fundamental to rock rhythm patterns, which serve as archetypes for specific rhythms.An archetype is a prototype, a model, or an innate experience of a species.Using more than 250 score examples, the author identifies the characteristic rhythmic patterns in rock styles, ranging from rock and roll, hard rock and punk rock to alternative rock, indie rock and grind core.