ed , ▁select ▁cho ir , ▁and ▁members ▁must ▁be ▁en rolled ▁in ▁the ▁school ' s ▁Center ▁for ▁the ▁Visual ▁and ▁Perform ing ▁Arts ▁magnet ▁program . ▁It ▁is ▁the ▁primary ▁tour ing / perform ing ▁cho ir ▁at ▁North western . ▁The ▁Advanced ▁Ens emble ▁performs ▁music ▁of ▁the ▁same ▁genre ▁as ▁the ▁main ▁Con cert ▁Ch oir , ▁but ▁the ▁music ▁tends ▁to ▁be ▁more ▁challeng ing , ▁with ▁more ▁foreign - language ▁re per toire . ▁The ▁Advanced ▁Ens emble ▁travel s ▁and ▁performs ▁the ▁most ▁extens ively ▁of ▁all ▁the ▁performing ▁groups . ▁The ▁Advanced ▁Ens emble ▁under w ent ▁their ▁first ▁international ▁tour ▁in ▁July ▁ 2 0 1 3 , ▁when ▁they ▁tra ve led ▁to ▁South ▁Africa ▁to ▁particip ate ▁in ▁a ▁two - week ▁concert ▁tour , ▁as ▁part ▁of ▁the ▁pr estig ious ▁I hl om be ▁South ▁African ▁Ch oral ▁Festival . ▁They ▁visited ▁the ▁cities ▁of ▁Johannes burg , ▁P ret oria , ▁S ow eto , ▁and ▁Cape ▁Town . ▁The ▁group ▁achieved ▁international ▁not or iety ▁and ▁media ▁coverage ▁during ▁their ▁tour , ▁when ▁they ▁performed ▁outside ▁of ▁the ▁Medic lin ic ▁Heart ▁Hospital , ▁the ▁facility ▁where ▁rever ed ▁former ▁president ▁of ▁South ▁Africa , ▁Nelson ▁Mand ela , ▁was ▁being ▁treated ▁for ▁ill ness . ▁ ▁The ▁G ospel ▁Ch oir ▁is ▁currently ▁taught ▁as ▁an ▁after - school ▁ensemble . ▁It ▁has ▁performed ▁g ospel ▁music ▁works ▁from ▁contemporary ▁g ospel ▁gre ats ▁such ▁as ▁Kirk