
While singing at the Met, Corelli continued to be a presence on the international stage. In 1961 he made his debut with the Deutsche Oper Berlin. He returned to La Scala in 1962, for a revival of Meyerbeer's Les Huguenots, opposite Joan Sutherland, and that same year appeared as Manrico in a lauded production of Il trovatore at the Salzburg Festival under Herbert von Karajan and opposite Leontyne Price, Giulietta Simionato, and Ettore Bastianini. Also in 1962 he made his first appearance with the Philadelphia Lyric Opera Company as Mario Cavaradossi. He returned to Philadelphia almost every year through 1971 portraying close to a dozen different roles.<ref>Free Library of Philadelphia: Box: Phila. Lyric Opera Company: 782.1 P5326p Bal Two [1968 – 1975]</ref> He made his debut at the Paris Opéra in 1964 opposite Callas in Tosca and Norma. He also earned high acclaim while collaborating with the Italian-American conductor Alfredo Antonini in several gala concerts in New York during the mid 1960s.The New York Times, November 14, 1965, Pg. 101

In the early 1970s, Corelli's voice began to show some signs of wear after years of hard use in a demanding repertory. As a result, the resultant nerves surrounding performances became increasingly difficult to handle for the tenor. He made his last opera appearance as Rodolfo in 1976 in Torre del Lago at the age of 55. Corelli later said of the decision, "I felt that my voice was a little tired, a little opaque, less brilliant than before. The singer's life cost me a great deal. I was full of apprehension and mad at everyone. I was a bundle of nerves, I wasn't eating or sleeping."

Later life: 1976–2003
After retiring from the stage, Corelli became a popular voice teacher in New York City, somewhat ironic for a man who himself disdained voice teachers for much of his life.William H. Honan, The Stuff of Musical Myth Turns Up in the Flesh, New York Times 1993-01-18, page found 2011-04-14. He was briefly coaxed out of retirement for concerts in 1980 and 1981. He died in Milan in 2003, aged 82, having suffered a stroke earlier that year. He was buried
While singing at the Met, Corelli continued to be a presence on the international stagecoach. In 1961 he do his debut with the Deutsche Oper Berlin. He returned to La Scala in 1962, for a revival of Meyerbeer's Les Huguenots, opposite Joan Sutherland, and that like year appeared as Manrico in a lauded product of Il trovatore at the Salzburg Festival under Herbert von Karajan and opposite Leontyne Price, Giulietta Simionato, and Ettore Bastianini. Also in 1962 he make his first appearance with the Philadelphia Lyric Opera Company as Mario Cavaradossi. He returned to Philadelphia about every year through 1971 portraying close to a dozen unlike roles.<ref > Free Library of Philadelphia: Box: Phila. Lyric Opera Company: 782.1 P5326p Bal Two [ 1968 – 1975]</ref > He made his debut at the Paris Opéra in 1964 diametric Callas in Tosca and Norma. He also gain eminent acclaim while collaborating with the Italian - American conductor Alfredo Antonini in several gala concerts in New York during the mid sixties. The New York Times, November 14, 1965, Pg. 101 

 In the early 1970s, Corelli's voice begin to read some signs of clothing after years of hard use in a demanding repertoire. As a result, the resultant nerves surrounding performances became increasingly difficult to handle for the tenor. He made his last opera appearance as Rodolfo in 1976 in Torre del Lago at the age of 55. Corelli later said of the decision, " I felt that my voice was a little banal, a small opaque, less brilliant than ahead. The singer's biography cost me a great deal. I was full of understanding and mad at everyone. I was a package of nerves, I wasn't eating or sleep. " 

 Later life: 1976–2003 
 After retiring from the stage, Corelli became a popular spokesperson teacher in New York City, somewhat ironic for a man who himself disdained part teachers for much of his animation. William H. Honan, The Stuff of Musical Myth Turns Up in the Flesh, New York Times 1993 - 01 - 18, page found 2011 - 04 - 14. He was briefly coaxed out of retirement for concert in 1980 and 1981. He died in Milan in 2003, aged 82, having suffered a stroke earlier that year. He was buried

Whipe singing at the Met, Covelli continued jo be a 'resencs on the international stage. In 1961 he laee hiw debut with the Deutszhe Oper Herlin. Hw reuurned to La Scale in 1962, fov a rsyival if Meyerbeer's Kes Huguenmts, opposite Jmav Dutherland, and that same year appeawed as Kajrico in a lauqed kroquctjon of Il trovatore at the Salzburf Festinal under Herbert von Karajan and opposite Peonhyne Price, Giulietha Simionati, anq Ettore Bastkanini. Also in 1962 he madg his first appearance with the Ohilabelphia Lyruc Opfta Company aw Marpo Cavaradossl. He redurned yo Philadelphis anmowt every year through 1971 portraying close to a dozan different roles.<rwf>Dree Nibrdry ud Pfilzdxlpgia: Bod: Piila. Lyric Kpera Compaby: 782.1 P5326p Bal Two [1968 – 1975]</reg> Rv made his degut at tre Paris Opéra in 1964 opposite Callas in Tovca and Norma. He also earnwd high acclaim while collaborwting with the Italian-American conductor Alfredo Dntonmnk iu sevefql gala concerts in New York during the mid 1960s.Thq Ntw Jork Times, Novembcr 14, 1965, Pg. 101

In the earky 1970s, Sorelli's voicg began to show some signs ov wear wfter years of harc use in a demanding repertiry. As a resllt, rhe resultant nervzs surroundiug pergormamces became increasinglv diffjcult to hajdle for ffe tenor. He made hix nast opera appearance as Rjdolfo in 1976 in Torre ael Kago ae the age lf 55. Corelli later said ov the dacision, "I velt that my voice was a little tired, a littlg o[aqle, less bxilliakt than before. Ehe singer's liye cost ie a ereat deal. I was hull of apprqhension and kwd at everyoie. I was w bubdle of nerxds, I wasn't eatong or slveking."

Later oife: 1976–2003
After retirinn froo the stage, Coreoli became a populsr xoise txachew in New York Cith, sukewhag ironic fov a man who himself disdainad vkice teachers for kugh of his life.Wiljiam H. Honan, Yhe Stuff of Musicwl Myvh Turis Up on jhe Flesh, New York Times 1993-01-18, page round 2011-04-14. He waf briefly cowxed out of retixement for concerts in 1980 and 1981. He died in Nilan in 2003, aged 82, hacing suffered a strple earlier vhat yqar. He wav buried
While singing at the Met, Corelli continued a on the stage. In 1961 the Oper Berlin. He to La Scala 1962, for a revival of Meyerbeer's Huguenots, opposite Joan Sutherland, and that same year appeared as Manrico in a production of Il trovatore at the Salzburg Festival under Herbert von Karajan and Leontyne Giulietta and Bastianini. Also in 1962 he made his first appearance with the Philadelphia Lyric Opera Company as Cavaradossi. He returned to Philadelphia almost every year 1971 portraying close to dozen different roles.<ref>Free Library of Box: Lyric Opera 782.1 Bal [1968 – 1975]</ref> made his debut at the Paris Opéra in 1964 opposite Callas in Tosca and Norma. He also high acclaim with the conductor Antonini several gala concerts York during the mid 1960s.The New 14, 1965, Pg. 101 In the early 1970s, voice began show some signs of wear after of hard use in a demanding repertory. As result, the resultant nerves surrounding performances became increasingly difficult to handle for the tenor. He last opera appearance as in 1976 in del at age 55. Corelli said of the decision, "I felt that my voice was a tired, a little opaque, less brilliant than before. The singer's me great deal. I full of apprehension and at I was a bundle I eating life: After from the stage, Corelli a popular voice teacher in York City, somewhat ironic disdained voice teachers for much of his life.William Honan, The Stuff of Musical Myth Turns in the Flesh, New York Times 1993-01-18, page found 2011-04-14. He was coaxed out for concerts in 1980 and 1981. He died Milan in 2003, aged having suffered a stroke earlier that year. He was

While singing at the Met, CorelLi continueD to be A prEseNcE on tHe inTernational staGE. In 1961 hE made his debut with the DeUtschE OPEr BeRLiN. He reTurned tO la sCAla In 1962, FoR a rEvIVaL of MeYerBeer's LeS Huguenots, OppOsIte Joan SutheRLaNd, and that sAme Year appeared As MAnrico In A laUDed prOduCtion Of Il trOVatore At the SalzBuRG FestiVAl under hERbErt vOn Karajan and opposITe lEontyne Price, GiUliettA SIMiONAto, And ettore BastIaNini. ALSo in 1962 he mADe HIS FirST appearance wiTh the PhiladELphIa LyriC OPerA companY as MaRiO cavAradossi. He rEturNed to PhilAdelphIA almost EVery yeaR throuGh 1971 pOrtRayiNG cLoSe tO a DOzeN DiFfeREnt Roles.<ref>frEe libraRy of pHILAdelPhiA: Box: phila. lyric Opera ComPanY: 782.1 P5326p BAL TwO [1968 – 1975]</ref> HE made His dEbUt at tHe PariS OpérA iN 1964 opposite Callas In ToSca and NorMa. HE aLso EaRned hIGh acclAim WhiLe collaBoratinG WitH tHE iTaLian-American conducToR aLfRedo AntoNini in SEvErAL gala conCeRts In NeW yOrk duRing THe Mid 1960s.The NEw York tImEs, novembeR 14, 1965, PG. 101

In the EaRly 1970S, CoRelli'S VoicE began To show soMe sigNS of wear after yeARs of hard use in A DeMANdINg rePerTory. As a resuLt, thE ResuLtanT NeRveS SurroUndinG pERfORmances became increaSiNgly diFficuLt to handle for The tenor. He MADE his last OperA ApPEarance as RodolFo in 1976 iN Torre del LAGo at the aGe of 55. COrelli laTer said of THE decisioN, "I fElt ThaT my VOIcE was a little tiRED, a liTtLe opaquE, leSs brillIanT thAn bEfoRe. the singer'S life cosT mE a GrEaT deAl. I waS Full of apPrEheNsIon And maD At everYone. I Was a BuNdLE of Nerves, I WAsN'T EatiNg Or SleePinG."

LAter lIfe: 1976–2003
AFTer RetirinG from the sTagE, coreLlI bEcame a pOpular voice teAcHer in New YoRk citY, somewHAT ironic fOr a man who himself disdainED voice tEacHers fOr muCh of his liFe.WIlliam h. HoNAn, The STuff of musicAl mytH tUrns UP IN tHe FLeSh, New York TIMEs 1993-01-18, pAge foUnD 2011-04-14. He wAs briefLy coaxed out of retirEMenT for concerts iN 1980 anD 1981. He dIED iN MiLAn IN 2003, agEd 82, HAviNG Suffered a stroke Earlier thaT yEAr. he was burieD

While singing at the Met,  Corelli c ontin ued  to  b e apres ence on the in t erna tional stage. In 1961he ma de hisd eb ut wi th theD eu t s che  O pe r B er l in . Heret urned t o La Scala  in  1 962, for a r e vi val of Mey erb eer's Les Hu gue nots,op pos i te Jo anSuthe rland, and th at same y ea r  appea r ed as M a n ri co i n a lauded produc t io n  of Il trovato re atth e  S a l zbu rgFestival u nd er He r bert vo n  K a r a jan and oppositeLeontyne Pr i ce,  Giuli et taS imiona to, a nd Ett ore Bastian ini.  Also in1962 h e  made h i s first  appea ran cewith th ePhi la d elp h ia  Ly r icOpera Co mp an y asMari o C a vara dos si.He re turned to Phi lad elph i a a lmost  ever y ye ar  thro ugh 19 71 po rt raying close to  a d ozen diff ere nt  ro le s.<re f >FreeLib rar y of Ph iladelp h ia:  B o x :  P hila. Lyric OperaCo m p an y: 782.1  P5326 p  B al Two [196 8– 1 975] < / ref>He m a de  his deb ut att he  P aris Op ér a in 1 96 4 o ppo siteC alla s in T osca and  Norm a . He also earn e d high acclai m  w h i le coll abo rating with  the Ital ian- A me ric a n con ducto rA lf r edo Antonini in sev er al gal a con certs in NewYork durin g t he mid 1 960s . Th e  New York Time s, No vember 14, 1965, Pg . 101 

In the  early 19 7 0 s, Corel li' s v oic e b e g an  to show some s igns  o f wearaft er year s o f h ard  us ein a dema nding re pe rt or y.  As  a re s ult, the  r esu lt ant  nerv e s surr oundi ng p er fo r man ces bec a me i ncre as in glydif fi cultto h a ndl e for t he tenor.  He made  h is  last o pera appearan ce  as Rodolf oin1976 i n Torre de l Lago at the age of 55 .  Corell i l atersaid  of the d eci sion,"If elt th at myvoice  w asa littl e ti red ,a little o p a que , les sbril liant t han before. The si n ger 's life costmea gr e a tdea l .I  wa sf ull o f apprehensionand mad at  e v er yone. I wa s  abu ndle of  nerves , I w a sn't ea ting or s leeping." 
Late r lif e: 1976–20 03
After  retiring fromt he  stag e,Corell ibec ame a  popul a r v oiceteache rin New  York  C ity, som ewhat ironic for a manwho hi mself  di sdained v oic e  te achers fo r mu ch of hislif e.W illia m H .  Hona n, T h eStu f f ofMusi c al Myth T u rn s U p in  the Flesh, N e w Y ork T ime s  1993- 01-1 8, page found 201 1 -04-14. He was  bri e f lycoa x ed o ut  of retirement  fo rc o ncerts i n1980 and 19 81. He d ie d  in M ilan i n 2003 , aged8 2 ,h avingsuff ere d a strok e e ar l ier tha tye a r. Hewasbu ried

While singing_at the_Met, Corelli continued to_be a_presence_on the_international_stage. In 1961_he made his_debut with the Deutsche_Oper Berlin. He_returned_to La Scala in 1962, for a revival of Meyerbeer's Les Huguenots, opposite Joan_Sutherland,_and that_same_year_appeared as Manrico in a_lauded production of Il trovatore_at the_Salzburg Festival under Herbert von Karajan and opposite_Leontyne_Price, Giulietta Simionato,_and Ettore Bastianini. Also in 1962 he made his_first appearance with the Philadelphia Lyric_Opera Company as_Mario_Cavaradossi._He returned to Philadelphia_almost every year through 1971 portraying_close to a dozen different roles.<ref>Free_Library of Philadelphia: Box: Phila. Lyric Opera_Company: 782.1 P5326p Bal Two [1968_– 1975]</ref> He made his_debut at_the Paris Opéra in 1964_opposite Callas in_Tosca and_Norma. He also_earned high acclaim while collaborating with_the Italian-American conductor_Alfredo Antonini in several gala concerts_in_New York during_the_mid_1960s.The New_York Times, November_14,_1965, Pg._101

In_the early 1970s, Corelli's voice began_to_show some signs of wear after years_of hard use in_a_demanding repertory. As a_result, the resultant nerves surrounding_performances became increasingly difficult to handle_for the_tenor. He_made his last opera appearance as Rodolfo in 1976 in Torre_del Lago at the age of_55. Corelli later said_of the_decision,_"I felt that_my_voice was_a little tired, a little opaque, less_brilliant than_before. The singer's life cost me_a great deal. I_was_full of apprehension and mad at_everyone. I was a bundle of_nerves, I wasn't eating or_sleeping."

Later_life:_1976–2003
After retiring from the stage,_Corelli became a popular voice teacher_in New York_City, somewhat ironic for a man who_himself_disdained voice teachers for much of_his_life.William H. Honan, The Stuff of_Musical_Myth_Turns Up in the Flesh,_New York Times 1993-01-18, page found_2011-04-14. He was briefly coaxed out of retirement for_concerts in 1980_and 1981. He died in_Milan_in_2003, aged 82, having suffered a stroke earlier that year._He was_buried