14 songs complete with demo and play-along tracks accessed online for streaming or download, including: Bernie's Tune · Cry Me a River · Fever · Fly Me to the Moon (In Other Words) · God Bless' the Child · Harlem Nocturne · Moonglow · A Night in Tunisia · One Note Samba (Samba De Uma Nota So) · Opus One · Satin Doll · Slightly Out of Tune (Desafinado) · Take the A Train · Yardbird Suite. The audio is accessed online using the unique code inside each 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.