3(Drum Play-Along). Play your favorite songs quickly and easily with the Drum Play-Along Series . Just follow the drum notation, listen to the audio to hear how the drums should sound, then play along using the separate backing tracks. The lyrics are also included for quick reference. Includes: Children of the Grave * Iron Man * N.I.B. * Paranoid * Sabbath, Bloody Sabbath * Sweet Leaf * War Pigs (Interpolating Luke's Wall). 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.