This book contains a collection of reference material about MIDI. It covers the MIDI specification, MIDI hardware, instruments, sequencing, digital audio in MIDI production, synchronization, and mixing. I'm no expert on MIDI, and I can't say that I really developed my understanding of MIDI by reading this book. Much of the prose I found rather obtuse, such as the following definition of multimedia: "Basically, multimedia is nothing more than a unified programming and operating system (OS) environment that lets multiple forms of program data and playback media coexist and be routed directly to the appropriate hardware device for output, playback, and/or processing." Perhaps someone who knows more about MIDI would find this book useful, but it's definitely not intended as an introductory book for novices. On the other hand, I get the feeling from the brevity of the book that it might not contain enough depth of detail to satisfy experts either.