▁and ▁Johann ▁Wilhelm , ▁Elect or ▁Pal at ine , ▁whom ▁he ▁served ▁as ▁a ▁musical ▁and ▁diplom atic ▁agent , ▁travel ing ▁extens ively ▁until ▁ 1 7 2 3 . ▁ ▁In ▁ 1 7 2 4 ▁he ▁returned ▁to ▁a ▁London ▁ab la ze ▁with ▁the ▁works ▁of ▁Hand el , ▁where ▁he ▁again ▁taught ▁and ▁was ▁a ▁found ing ▁member ▁of ▁the ▁Academy ▁of ▁An cient ▁Music . ▁He ▁took ▁holy ▁orders ▁som etime ▁before ▁his ▁death ▁in ▁Fa enza , ▁Italy ▁in ▁ 1 7 3 2 . ▁ ▁In ▁addition ▁to ▁being ▁a ▁well - known ▁sop rano ▁( of ▁the ▁cant abile ▁style , ▁singing ▁mostly ▁chamber ▁music ) ▁and ▁voice ▁teacher , ▁T osi ▁was ▁a ▁composer ▁of ▁several ▁a rias ▁and ▁cant at as . ▁ ▁Op in ioni ▁de ' ▁cant ori ▁ant ichi , ▁e ▁modern i ... ▁[ Ob serv ations ▁on ▁the ▁Flor id ▁Song ] ▁Op in ioni ▁is ▁primarily ▁directed ▁to ▁the ▁singing ▁teacher , ▁lay ing ▁out ▁what ▁and ▁how ▁they ▁must ▁teach ▁their ▁pup ils . ▁ ▁It ▁also ▁includes ▁a ▁chapter ▁and ▁several ▁pass ages ▁addressed ▁to ▁the ▁future ▁professional ▁singer ▁with ▁advice ▁on ▁good ▁taste , ▁orn aments , ▁performance ▁skills ▁and ▁the ▁life ▁and ▁business ▁of ▁singing ▁profession ally . ▁ ▁T osi ▁str esses ▁the ▁need ▁for ▁a ▁long ▁period ▁of ▁student ▁training ▁in ▁reading ▁and ▁compos ing ▁music , ▁singing ▁and ▁construct ing ▁orn ament ation , ▁as ▁well ▁as ▁in