People have been playing music on homemade instruments for thousands of years. But creating new instruments is much more than an art form. When you want to make a note sound higher or lower, you have to change the sound waves coming out of the instrument. That's science When you explore the way different materials produce different sounds, that's engineering. When you speed up or slow down a song, you're counting beats -- using math. And technology makes electronic instruments and devices to record and play back music possible.
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.