These play-along packs include 13 themes from hit movies: Apollo 13 • Braveheart • Chariots of Fire • Dances with Wolves • E.T. • Jurassic Park • Mission: Impossible • Mr. Holland’s Opus • Raiders of the Lost Ark • Forrest Gump • more. Backing tracks are 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.