" He's a scientist, a musician, and a funny guy. This makes John Powell the perfect guy to explain things like why 10 violins aren't 10 times louder than 1 violin, why certain notes sound good together, and how microphones work. For musically inclined, you'll get a nice little dose of science to explain all those eardrum waggling vibrations. For those who cannot read music, you'll learn how (and why) key signatures work. It is fun and interesting with a few illustrations along the way. "
— Garrett, 2/8/2014