(Guitar Play-Along). The Guitar Play-Along Series will help you play your favorite songs quickly and easily! Just follow the tab, listen to the included audio to hear how the guitar should sound, then play along using the separate backing tracks. The melody and lyrics are included in the book. Includes seven Sabbath hits: Black Sabbath * Children of the Grave * 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.