(Fast Track Music Instruction). The fast way to find just the chord you need. This user-friendly reference book is jam-packed with over 1,400 chords and voicings and includes a "jam session" with 20 original songs using common chord progressions. 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.