“On his new album IWASVERYBAD, the Maryland rapper IDK (formerly Jay IDK) chronicles his stormy adolescence. Much of the album exists in a world of conflict, and it enters its darkest moments on “17 Wit a 38.” Producer Daniel Worthy’s beat portends doom, with its droning 808s and industrial percussion, and IDK enters this scene with an unforgettable howl: “17 with a .38,” he snarls, compressing int”