▁mot et ▁G au de ▁flor is , ▁a ▁M esse ▁br ève ▁à ▁trois ▁voix ▁and ▁the ▁song ▁La ▁Ph ry g ienne ▁for ▁cho ir ▁and ▁piano . ▁ ▁With ▁Le ▁T rom p ette ▁de ▁Ch amb or an ▁De ff ès ▁returned ▁to ▁the ▁opera ▁stage ▁in ▁ 1 8 7 7 . ▁His ▁sym ph onic ▁over t ure ▁Un ▁Tri omp he ▁à ▁Rome ▁was ▁performed ▁at ▁the ▁ 1 8 7 8 ▁World ▁Ex hib ition . ▁A ▁new ▁mass ▁by ▁De ff ès ▁was ▁performed ▁at ▁the ▁Saint - E t ienne ▁C athedral ▁of ▁Toul ouse ▁in ▁ 1 8 7 9 . ▁Here ▁he ▁succeeded ▁Paul ▁M éri el ▁as ▁director ▁of ▁the ▁Conserv atoire ▁de ▁Toul ouse ▁in ▁ 1 8 8 3 . ▁He ▁held ▁the ▁position ▁until ▁his ▁death , ▁his ▁successor ▁was ▁Bernard ▁Cro cé - Sp in elli . ▁ ▁De ff ès ▁had ▁been ▁a ▁member ▁of ▁the ▁Association ▁des ▁Art istes ▁Mus ici ens ▁since ▁its ▁foundation ▁in ▁ 1 8 4 3 ▁and ▁belonged ▁to ▁its ▁central ▁committee ; ▁he ▁was ▁also ▁a ▁found ing ▁member ▁of ▁the ▁Société ▁des ▁Compos ite urs ▁de ▁musique ▁( 1 8 6 3 ). ▁In ▁ 1 8 8 4 , ▁he ▁became ▁a ▁corresponding ▁member ▁of ▁the ▁composition ▁section ▁of ▁the ▁Ac adémie ▁des ▁Be aux - Ar ts . ▁He ▁was ▁awarded ▁the ▁title ▁of ▁Knight ▁of ▁the ▁Leg ion ▁of ▁Hon our . ▁ ▁Selected