Given his consistency, it’s not hard to fathom that for most most emcees, matching Sidewalk Kal’s substance is like playing tug-of-war with an 18-wheeler.

After pairing up with fellow Impolite Society crewman Elee X on “The World” and “Wackass Artwork,” Kal rides solo on “FreeSosa.” Conjuring feelings of Golden-Era nostalgia, the young wordsmith comes out swinging over “Yok ’96,” a spaced-out instrumental from producer Mattron.