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.