▁The ▁Magic ▁Fl ute . ▁( In ▁ 1 9 3 7 - 3 8 ▁he ▁recorded ▁a ▁complete ▁Pap agen o ▁for ▁H M V , ▁with ▁Sir ▁Thomas ▁Be ech am ▁conduct ing ▁the ▁Berlin ▁Phil harm onic ▁Orchestra .) ▁His ▁stage ▁re per toire , ▁however , ▁included ▁most ▁of ▁the ▁standard ▁roles ▁for ▁the ▁l ighter ▁bar it one ▁voice , ▁including ▁those ▁of ▁Wagner . ▁Indeed , ▁he ▁was ▁invited ▁to ▁perform ▁at ▁the ▁annual ▁Bay re uth ▁Festival , ▁most ▁fam ously ▁in ▁ 1 9 3 0 ▁and ▁ 1 9 3 1 ▁as ▁Wol fram ▁in ▁T ann hä user , ▁under ▁the ▁b aton ▁of ▁Art uro ▁T os can ini . ▁The ▁vocal ▁music ▁of ▁Richard ▁Stra uss ▁was ▁familiar ▁to ▁him , ▁too , ▁and ▁he ▁took ▁part ▁in ▁the ▁premi ere ▁of ▁Stra uss ' s ▁Inter mez zo . ▁ ▁He ▁partner ed ▁many ▁of ▁Germany ' s ▁best ▁sop ran os , ▁mez zo - s op ran os , ▁ten ors ▁and ▁bass es ▁of ▁the ▁inter - war ▁years , ▁while ▁Bruno ▁Walter ▁completed ▁a ▁tri um vir ate ▁of ▁last ingly ▁famous ▁conduct ors ▁with ▁whom ▁he ▁appeared ▁( the ▁others ▁being , ▁as ▁we ▁have ▁seen , ▁T os can ini ▁and ▁Be ech am ). ▁ ▁L ack ing ▁the ▁she er ▁vocal ▁amplitude ▁of ▁his ▁hero ic ▁bar it one ▁contempor aries ▁Hans ▁Hot ter ▁and ▁Rudolf ▁B ock el mann , ▁H