Your two best options are:
ensures that the 12 notes are given equal important.
and:
is characterized by the works of Arnold Schoenberg.
the twelve-tone technique was made by Arnold Schoenberg and is also called "serialism" and "dodecaphony." It's a method that rejects keys.
A beginning of a new government.
Figurative is something that shouldn't be taking literally. For example, when you say "I have a ton of homework" you don't really mean you have 2000 pounds of homework.
A <span>constituent is </span>a member of a group represented by an elected official.