Fill out this form. You need to have a username, a password, a working email and you have to write something in the description about how create music. Your email will not be shown if you don't activate that in your house. Other data will be shown to the web (search engines) only if you want.
Musmakers can delete or ban anyone, but the members themselves, not Musmakers, are responsible for their actions. Talk to each other first and only contact the Musmakers crew if someone breaks the only truly important rule on the community:
Don't harass other members!