Lil B has been a cult hero since the glory days of MySpace. To many people, that’s still all he is — a stand-in for all the kids who yell “swag swag,” for everyone who’s still doing the cooking dance or signing their tweets “Thank You Based God.” But the Bay Area rapper’s eccentric hippie style has been an important influence on artists like Chicago star Chance the Rapper, who partnered with Lil B for this joyful mini-mixtape. The six songs here all follow the “based freestyle” format that Lil B pioneered, with free-associative lyrics over blown-out soul samples. Chance prays for his hometown (“First Mixtape”), while Lil B sends his best wishes to the whole world (“Do My Dance”). The two artists have a genuine, wide-eyed warmth in common, as Chance notes: “Can I just introduce my mans real quick?” he says. “Most mixtapes ever listened to in the world. . .most positive. . .most loving. . .most caring. . .most eclectic. . .most intellectual artist. . .Lil B.” Free promises great things ahead from these two very based brothers.