▁ 1 9 2 7 , ▁M addy ▁was ▁invited ▁to ▁bring ▁the ▁National ▁High ▁School ▁Orchestra ▁of ▁over ▁ 2 5 0 ▁High ▁School ▁mus icians ▁from ▁ 3 9 ▁states , ▁to ▁the ▁MS NC ▁in ▁Dallas ▁that ▁year . ▁ ▁While ▁in ▁Ann ▁Ar bor , ▁M addy ▁also ▁purs ued ▁other ▁approaches ▁to ▁music ▁education ▁by ▁developing ▁teaching ▁materials ▁in ▁collaboration ▁with ▁Th ad de us ▁P . ▁G idd ings ▁for ▁a ▁radio ▁teaching ▁program . ▁▁ ▁The ▁radio ▁program ▁taught ▁band ▁and ▁or chestra ▁instrument ation ▁with ▁instruction ▁books ▁distributed ▁by ▁N BC . ▁▁▁ ▁By ▁ 1 9 3 6 ▁their ▁radio ▁program ▁a ired ▁five ▁times ▁per ▁week , ▁and ▁believed ▁to ▁have ▁reached ▁ 2 2 5 , 0 0 0 ▁student ▁listen ers . ▁ ▁It ▁was ▁sust ained ▁until ▁ 1 9 4 0 , ▁and ▁employed ▁professional ▁mus icians ▁to ▁help ▁with ▁technique ▁demonstr ations . ▁ ▁In ▁ 1 9 2 8 ▁M addy ▁formed ▁the ▁National ▁High ▁School ▁Orchestra ▁and ▁Band ▁Camp , ▁incorpor ated ▁as ▁the ▁National ▁High ▁School ▁Orchestra ▁Camp ▁on ▁July ▁ 6 , ▁ 1 9 2 7 . ▁▁ ▁The ▁camp ▁exists ▁today ▁as ▁the ▁Inter lo chen ▁Center ▁for ▁the ▁Arts , ▁and ▁has ▁spawn ed ▁several ▁complement ary ▁entities ▁including ▁Inter lo chen ▁Arts ▁Academy , ▁Inter lo chen ▁College ▁of ▁the ▁Creative ▁Arts ▁and ▁Inter lo chen ▁Public ▁Radio ▁in ▁Inter lo chen , ▁Michigan . ▁ ▁In ▁ 1 9