Tom Jackson 
Music Technology [PDF ebook] 

Technology has a story to tell. Find out about the history of the machines and gadgets that make the modern world, from spacecraft that visit other planets to web-enabled glasses and a car that can outrun airplanes. Learn where everyday technology began and take a look at how it might change in the future. We carry our favorite songs with us in small pocket-sized players today-and listen to them whenever we want to. But how did people enjoy music in the past?