One good turn—or, as the case may be, one dope guest verse—deserves another. Having recruited the up-and-coming emcee's mic-murdering services on The L@st LOL and Purple Clouds, two cuts off his DJBooth-sponsored (and acclaimed) Diagnosis: Success street album, perennial reader fave K. Sparks returns the first half of the favor on What I Know, JAYVINE's first feature as a headliner. Making its world premiere right here in The DJBooth, this lyrical banger finds beatsmith Kurser slicing and dicing an eerily familiar fusion-jazz sample (anyone ID that for me?) as the Double Up Entertainment labelmates take turns lacing the beat with witty, allusive punchline rhymes; JAYVINE taking an aggressive, no-nonsense approach on the mic and Sparks seizing the opportunity to show off some of his freshest double-time flows. The project to which this joint is attached has yet to receive a title or drop date but, as always, those who like what they're hearing can keep it locked to The DJBooth for the latest release details.