(Do It Yourself). Do-It-Yourself Music Theory is a fun way to get started understanding music on your own. Using well-known music from pop, classical, and many other styles, you will be given step-by-step instructions on what you need to know to get started. You'll be understanding everything in no time! Includes over 180 piano demonstration tracks of the following topics: * Theory basics * Understanding chords, scales, and keys * Intervals * Chord sequences * Classical music * Jazz harmony * Checkpoints for testing your knowledge Audio is accessed online using the unique code inside the book and can be streamed or downloaded. The audio files include PLAYBACK+, a multi-functional audio player that allows you to slow down audio without changing pitch, set loop points, change keys, and pan left or right.