[[Under construction, help appreciated]]
Sound World is the world the Show by Rock!! anime is set in. Residents of the world, Myumons, have built their entire life and society on music and sound. Everything about this world runs on the love of music. While there are other professions and careers in the world, everything big revolves around music. It is stated that not one Myumon in this world dislikes music.
The Sound World has 12 city-states, but not much is known about them all.
The capital of Sound World is Midi City, the place where all the famous musicians and up and coming artists battle it out to be the most popular music group of all.
It has been mentioned by Dagger that The Sound World is a small part of The Sound Cosmos, which he wishes to dominate.