Earlier this week (March 7), Just Blaze stopped by the studio to spin a nearly hour-long set for DJ City, after which the Paterson, New Jersey record producer and master of the decks indulged his hosts with an interview.

DJ City, a digital record pool for DJ professionals – is not only a source for equipment, but also news and music content. “MikiDz Show” is one such music channel found at DJ City. Hosted by MikiWAR and Dainjazone, the program features video footage of DJ sets from world-class talent including Jazzy Jeff, QBert, J. Rocc, Z-Trip, and more.

Heads know him well for his extensive production work for Jay Z, but the accomplished beat-maker has also worked with Big Pun, Busta Rhymes, Ghostface Killah, Jay Electronica, Kanye West, Kendrick Lamar, Snoop Dogg, Talib Kweli, and countless others. With nearly 20 years in the game, it’s only logical that in addition to the plethora of released material he sits on, along the way there are opportunities to drop some previously unheard heat, and his “MikiDz Show” set was just such an opp.

In the set, Heads can hear the Just Blaze usual suspects—hits from the Roc-A-Fella Records reign, and other work-for-hire. Blaze goes in on some breaks (9:00), and personal favorites. At the 12:00 mark, Heads can watch him get to work on a Rick James sample on the drum-sample programming pads that take Jay Z’s “Kingdom Come” to a whole new level.

However, where things get interesting is after the 30:00 mark, Just Blaze tells the intimate audience “I’ll probably get in so much trouble for playing this,” where at 31:31, he drops the virtual CDJ on Busta Rhymes and M.O.P. The two acts have collaborated a bunch over the last 20 years, but this particular untitled joint has a beat that packs just as much energy as the MCs. “That’s never coming out, probably,” Just says after playing Bus’ verse. Perhaps it was part of Mash Out Posse’s early 2000s tenure at the Roc? “Before that was a Jay Electronica record that’s probably never coming out, but whatever.”

At 38:30, Just Blaze plays the “original” version of “Lord Knows,” by Drake. (40:00) After, Blaze shows what he’s going to play Snoop Dogg after the DJ set as a possible intro to the Long Beach, California veteran MC’s next album. At 43:20, Just Blaze plays the instrumental to what he confirms is Jay Electronica’s “Exhibit G.” Heads will have to bite their nails to see if the vocals ever come to the acclaimed song series from the New Orleans, Louisiana MC/producer. To close out the live-mix goodie-bag, Just Blaze shows an instrumental intended for Jay Z’s The Blueprint 3 that sample clearances held from appearing on the 2009 LP. This one revives that early Blueprint chemistry between the MC and producer.

Some smaller treats follow before the interview, including an instrumental for Jeezy and one for early Slaughterhouse.

Related: Oh Boy! Just Blaze Brings Out Unreleased Roc-A-Fella Goodies In A Radio Set (Mix)