Answer:
Part I: Rhythm: Keeping the Beat By the 17th century, the five-lined staff was considered standard for most musical instrumentation — probably because it was easier and cheaper to print just one kind of sheet music for musicians to compose on. The system hasn’t changed much over the past four centuries, and probably won’t change again until a new, sexier, more appealing instrument interface enters the scene. But now that you know about how music theory started, let’s get on to the real reason you picked up this book: to learn how music theory works.
Explanation:
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