What musical technique is exemplified by Central Park in the Dark according to the material?

• A. Polytonality
• B. Monophony
• C. Canon
• D. Homophony

Answer: (A)

Polytonality is when two or more tonal centers sound at the same time. In Central Park in the Dark, different musical lines establish their own keys and are heard together, so you get a sense of multiple keys at once rather than a single, unified key. That layered, overlapping tonality creates the distinctive color of the piece and shows how harmony can be formed by combining independent keys. It isn’t just a single melody with accompaniment (that would be homophony), nor a strict imitation between parts (that would be a canon), nor a single melodic line (that would be monophony). The simultaneous presence of different keys is the hallmark of polytonality.