Identify the composer who wrote four-voice organum for the cathedral of Notre Dame in Paris

Which sound has approximately the same decibel level as a large orchestra at full volume?

a) a jackhammer b) a rock concert c) a noisy kitchen d) ordinary conversation, from 3 feet away

Which of the following is an essential belief of Daoism?

A. All things are a harmonious blending of similarities. B. Entities contain their complementary opposites. C. The common man should always be glorified. D. Everyone embraces the world’s imperfections.