Answer:
Schoenberg
Explanation:
The twelve-tone technique—also known as dodecaphony, twelve-tone serialism, and (in British usage) twelve-note composition—is a method of musical composition first devised by Austrian composer Josef Matthias Hauer,[not verified in body] who published his "law of the twelve tones" in 1919.
The name of the key is based on the name of the corresponding tonic (also known as a keynote)
Black and white are also used to create shadows
Johann Sebastian Bach was a composer
