▁history , ▁and ▁eventually ▁succeeded ▁his ▁father ▁as ▁the ▁school ' s ▁director ▁in ▁ 1 9 2 9 , ▁in ▁which ▁post ▁he ▁continued ▁until ▁he ▁retired ▁in ▁ 1 9 6 0 . ▁As ▁director ▁he ▁introduced ▁classes ▁in ▁orch est ral ▁and ▁ch oral ▁conduct ing ▁which ▁he ▁himself ▁ran , ▁and ▁among ▁his ▁other ▁teaching ▁innov ations ▁were ▁introdu cing ▁tu ition ▁in ▁sa x oph one ▁and ▁the ▁use ▁of ▁the ▁gram oph one ▁in ▁classes . ▁With ▁the ▁intent ▁of ▁ens uring ▁that ▁students ▁were ▁good ▁teachers ▁as ▁well ▁as ▁perform ers ▁he ▁also ▁created ▁a ▁course ▁in ▁musical ▁ped ag ogy ▁in ▁ 1 9 3 4 . ▁One ▁of ▁his ▁notable ▁students ▁was ▁Ernest ▁Bour . ▁ ▁He ▁succeeded ▁his ▁father ▁as ▁the ▁conduct or ▁of ▁the ▁la ud ed ▁Ch œur ▁Saint - Gu illaume ▁at ▁Saint ▁William ' s ▁Church , ▁Str as bourg ▁in ▁ 1 9 2 4 . ▁During ▁this ▁period ▁he ▁program med ▁works ▁such ▁as ▁Hay dn ' s ▁The ▁Se asons , ▁the ▁Moz art ▁Re qu iem ▁( with ▁which ▁he ▁inaugur ated ▁Radio ▁Str as bourg ▁on ▁ 1 1 ▁November ▁ 1 9 3 0 ), ▁and ▁among ▁contemporary ▁compos ers , ▁he ▁conducted ▁Deb uss y , ▁Sch mitt , ▁Stra vin sky ▁and ▁especially ▁Hon eg ger . ▁He ▁conducted ▁the ▁premier es ▁in ▁Str as bourg ▁of ▁the ▁O de ▁of ▁Nicolas ▁N ab ok ov ▁in ▁ 1 9 3