Gimme The Beat (Box): The Journey Of The Drum Machine : The Record : NPR

What began as little more than a glorified metronome has worked its way into bedroom studios and state-of-the-art recording facilities alike. A new book chronicles the history and influence of the drum machine in all its wood- and plastic-paneled glory.

http://www.npr.org/blogs/therecord/2014/01/17/263071563/gimme-the-beat-box-the-journey-of-the-drum-machine