The Classic Material 'bonus' mixes fill the gaps in the original Classic Material Hip Hop History mixtape series, each exploring a specific sub genre or spin off genre not covered in the main series. #4 delves into the late 80s / early 90s sound of New Jack Swing, and more specifically some of the Hip Hop from the time that was influenced by the New Jack Swing production sound. Features production from producers central to the sound - Teddy Riley, Eddie F, and some better known for other sounds who dabbled at the time - Marley Marl, Pete Rock and others.

As with previous editions, the artwork is a pastiche of a popular sleeve from the era, in this case the Uptown Records label company/promo jacket.

Tracklist: http://musicofsubstance.com/discography/classic-material-bonus-mix-4-new-jack-rap-89-93/