More than forty-two operas have been attributed to Cavalli. Manuscript scores of twenty-six are extant, preserved in the Biblioteca Nazionale Marciana (Library of St Mark) in Venice. Scores of some of the operas also exist in other locations. In addition, the music of his two last operas (Coriolano and Masenzio), which are clearly attributed to him, is lost. Another twelve or so for which the music is lost have also been attributed to him, but these attributions have either been disproved or remain uncertain. Cristoforo Ivanovich, who published the first chronicle of Venetian opera, Minerva al tavolino (Venice, 1681), attributed most of the anonymous works from the first 15 years of public performances in Venice to Cavalli, and many of these attributions were repeated by subsequent authors. The American musicologist Thomas Walker, writing in The New Grove Dictionary of Opera, considered seven of Ivanovich's attributions and another two by other authors as doubtful.Walker, Thomas (1992). "Cavalli, Francesco", vol. 1, pp. 783–789, in The New Grove Dictionary of Opera, four volumes, edited by Stanley Sadie. London: Macmillan.
more tHan ForTy-two OPeRas have bEeN attRIbuted to cAvaLlI. maNUScrIpt SCores Of tWentY-sIx ArE eXTanT, PreserveD In the bibLiotECA naziOnalE mArciANA (LiBrarY Of st mark) in veNIce. scores of SomE of the operAs also EXIst in OTHeR locatIons. in adDitIon, the mUsiC OF his twO lasT opeRAs (Coriolano and mASeNZIo), WhicH ARe CLearly AtTributED tO him, is lost anoTHEr twelve oR so For whIch the mUsIc is lost haVe also BeEn attRIBuTED To HiM, But These AttRIbuTIOns have eiThEr bEen dIsprOvEd or Remain UncertaiN. cRIstOForO ivAnovich, wHO puBLisHeD tHe first ChrOniCle of VEnetIan opera, mineRVa AL TaVOlinO (veNice, 1681), attrIbUted MoST Of thE anONYmous woRks from THe firST 15 YeArs oF publIc pErfoRmanCEs iN veNiCe to caVALli, aND maNy of THEsE atTRibUtIons were RePeaTeD by SubsEQUent aUthOrs. thE amerIcaN MusicologiSt tHOmAs waLkEr, wRItinG iN thE New GRove dictiONary OF opERA, coNsIdered sEVeN OF iVanOvIch'S aTtributions and anOther twO By otheR aUthorS as doubtfUl.walker, tHomaS (1992). "cAvALli, FranCesCo", vol. 1, Pp. 783–789, in the neW grOve dicTionaRY oF OpEra, fOur VOlumes, EdITed by stanLEy Sadie. london: maCMiLlan.