Select all that apply.

the twelve tone technique

a. ensures that the 12 notes are given equal importance
b. ensures that the music will be on key
c. is characterized by the works of arnold schoenberg
d. is part of expressionism music

A. Ensures that the 12 notes are given equal importance

Explanation:

The twelve tone technique is a form of atonal music, with a technique of composition where the twelve notes of the chromatic scale are treated as equivalent, that is, subject to an ordered relation that does not establish hierarchy between the notes. Current traditional and popular music is usually tonal.

The founder of this technique was Arnold Schönberg. One of the main rules is that no sound is repeated until all the tones have sounded.

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