Over blistering bass and ghostly bells, Mikey Dollaz’ “Problem” visual has the emcee confronting his longstanding saga with drugs and mobbing out a house with his crew. Mikey conquers his rhymes, delivering dark, menacing verses atop a slowed half-time beat. “Problem” is a standout track of his recently released “Good Music Gone Bad” mixtape, and exhibits the fierce grime-influenced and Chicago drill sound that has helped Mikey Dollaz gain attention as one Chicago’s most noteworthy upcoming rappers.