This week's mix of sound and vision on the acclaimed music and youth culture show explores heritage. The programme steps inside sound system culture with the legendary King Tubby's, gets an intimate portrait of photographer Vicky Grout, and talks musical legacy with East London's finest, Newham Generals. Live performance comes from Cassels and Kojey Radical, plus there's spoken word from Tommy Sissons and music from Shy FX, Tirzah, Adeva and the late Smiley Culture.