Music genres timeline timeline description the timeline below provides an overview of popular musical styles from the baroque period through the modern world the flowering of various musical styles since the early 20th century becomes clear with a variety of different music options. This is a list of musical genres organized according to the eras of classical musicthe form of a musical composition refers to the general outline of the composition based on the sections that comprise it or on specific details that are unique to a certain type of composition for example a rondo is based on alternation between familiar and novel sections abaca a mazurka is defined by . Musicmap provides the ultimate genealogy of all popular music genres and combines any information regarding music genres such as their relations sociology history and music examples in one dynamic map serving as both an educational tool and a framework for music databases