Sleep have added more dates to their world tour. Check out their updated schedule below. Tour Dates: 03/31 Detroit, MI – St. Andrews Hall (with SubRosa) 04/01 Cleveland, OH – Agora Ballroom (with SubRosa) 04/02 Columbus, OH – Columbus Athenæum (with SubRosa) 04/03 Indianapolis, IN – The Vogue (with SubRosa) 04/05 Milwaukee, WI – Pabst…