Give the name and dates for each of the six historical periods. Provide the names of two composers from each era along with a description of two qualities of the music from each period. For example, here is a mythical historical era with the equally mythical required information. Historical Period Name: Post-Modern Period Historical Period Dates: 2020-2075 Historical Period Composers: Gregory Futureman and Amanda Hasnotbeenbornyet Historical Period Musical Characteristics: The music from this time period makes use of hypersonic variables and generally conforms to rigid, yet flexible, formal structures.