In 2015, Gold released his first instructional book for Alfred Music. Entitled Sitting In: Blues Piano, it features backing tracks and improv lessons, and includes progressions in essential blues styles, like boogie woogie, shuffle, gospel, blues-rock, swing blues, and others. Audio recordings contain sample solos, while the book provides tips focusing on scales, modes, comping patterns, and other ideas for developing an authentic blues vocabulary. The recordings feature a live band with piano, guitar, bass, harmonica, and drums.
