Jommelli wrote
cantatas,
oratorios and other sacred works, but by far the most important part of his output were his operas, particularly his
opere serie of which he composed around sixty, several with
libretti by Metastasio. These tended to concentrate more on the story and drama of the opera than on flashy technical displays by the singers, as was the norm in Italian opera at that time. He wrote more ensemble numbers and choruses, and, influenced by French opera composers such as
Jean-Philippe Rameau, introduced
ballets into his work. He used the orchestra (particularly the
wind instruments) in a much more prominent way to depict what was going on in the story, including passages for orchestra alone, rather than consigning it to merely support for the singers. From Hasse, he learned to write orchestrally accompanied
recitatives rather than just "secco" recitatives for voice and continuo (mainly
harpsichord). His reforms are sometimes regarded as equal in importance to
Christoph Willibald Gluck's.
Chamber music • Sonata in C for Organ 4-Hands (c. 1750) • Trio Sonata in D for 2 Flutes and Cello (c. 1750)
Instrumental music •
Ciaccona in Eb for Organ, Op. 5/13 (c. 1764) • “Sinfonia di Salterio” with two violins and basso continuo
Masses •
Missa pro defunctis (Requiem) in Eb (1756) •
Missa solemnis in D for Soprano, Alto, Tenor, Bass, Choir and Orchestra (1766)
Psalms •
Beatus vir (c. 1750) •
Laetatus sum (Psalm 122) in F (1743) •
Miserere (Psalm 51) in G a 4 concertato (1749) •
Miserere in G minor for 5 voices (SSATB), choir and continuo, HC1.23 (1750) •
Miserere in D for 2 sopranos, alto and tenor (1751, for Rome) •
Miserere in E minor for 8 voices (1753, for Stuttgart) •
Pietà, pietà, Signore (Miserere) in G minor for 2 sopranos, strings and continuo (1774)
Oratorios •
Isacco, figura del Redentore (1742) •
Betulia liberata per 4 voci, coro e strumenti (Rome, 1743) – libretto by Metastasio •
Gioas re di Giuda (Venice, 1745) – libretto by Metastasio •
La Passione di Gesù Cristo per 4 voci (Venice, 1749) – libretto by Metastasio
Operas • ''L'errore amoroso'' (Naples, 1737) – libretto by
Antonio Palomba •
Odoardo (Naples, 1738) • ''Ricimero re de' Goti'' (Rome, 1740) •
Astianatte (Rome, 1741) – libretto by
Antonio Salvi •
Ezio (Bologna, 1741) – libretto by
Metastasio •
Semiramide riconosciuta (Turin, 1741) – libretto by Metastasio •
Merope (Venice, 1741) – libretto by
Apostolo Zeno •
Don Chichibio (Rome, 1742) •
Eumene (Bologna, 1742) – libretto by Apostolo Zeno •
Semiramide (Venice, 1742) – libretto by Francesco Silvani •
Tito Manlio (Turin, 1743) – libretto by Gaetano Roccaforte •
Demofoonte (Padua, 1743) – libretto by Metastasio • ''
Alessandro nell'Indie'' (
Ferrara, 1744) – libretto by Metastasio •
Ciro riconosciuto (Ferrara, 1744; later in Bologna and Venice) – libretto by Metastasio •
Sofonisba (Venice, 1746) – libretto by Antonio Zanetti e Girolamo Zanetti •
Cajo Mario (Rome, 1746) – libretto by Gaetano Roccaforte •
Antigono (
Lucca, 1746) – libretto by Metastasio •
Tito Manlio (Venice, 1746) – libretto by Jacopo Antonio Sanvitale •
Didone abbandonata (Rome, 1747; later in Stuttgart) – libretto by Metastasio • ''L'amore in maschera'' (Naples, 1748) – libretto by Antonio Palomba •
Achille in Sciro (Vienna, 1749; much later in Rome) – libretto by Metastasio •
Artaserse (Rome, 1749) – libretto by Metastasio •
Demetrio (Parma, 1749) – libretto by Metastasio • Intermezzo
Don Trastullo (Rome, 1749) • Intermezzo
L’uccellatrice e il Don Narciso (Venice, 1751) – libretto by
Carlo Goldoni •
Cesare in Egitto (Rome, 1751) – libretto by Giacomo Francesco Bussani •
Ifigenia in Aulide (Rome, 1751) – libretto by
Mattia Verazi •
La villana nobile (Palermo, 1751) – libretto by Antonio Palomba •
Ipermestra (Spoleto, 1751) – libretto by Metastasio •
Talestri (Rome, 1751) – libretto by Gaetano Roccaforte •
I rivali delusi (Rome, 1752) •
Attilio Regolo (Rome, 1753) •
Bajazette (Turin, 1753) – libretto by Agostino Piovene •
Fetonte (Stuttgart, 1753) – libretto by Leopoldo de Villati •
La clemenza di Tito (Stuttgart, 1753) – libretto by Metastasio •
Il paratajo (Paris, 1753) – revision of
L’uccelatrice e il Don Narciso •
Don Falcone (Bologna, 1754) •
Catone in Utica (Stuttgart, 1754) – libretto by Metastasio •
Lucio Vero (Milan, 1754) •
Il giardino incantato (Stuttgart, 1755) •
Enea nel Lazio (Stuttgart, 1755) – libretto by Mattia Verazi •
Penelope (Stuttgart, 1755) – libretto by Mattia Verazi •
Il Creso (Rome, 1757) – libretto by Giovacchino Pizzi •
Temistocle (Naples, 1757) – libretto by Metastasio •
Tito Manlio (Stuttgart, 1758) •
Ezio (Stuttgart, 1758) • ''L'asilo d'amore'' (Stuttgart, 1758) •
Endimione (Stuttgart, 1759) •
Nitteti (Stuttgart, 1759) – libretto by Metastasio • ''Alessandro nell'Indie'' (Stuttgart, 1760) •
Cajo Fabrizio (Mannheim, 1760) – libretto by Mattia Verazi • ''L'Olimpiade'' (Stuttgart, 1761) – libretto by Metastasio • ''L'isola disabitata'' (Ludwigsburg, 1761) – libretto by Metastasio •
Semiramide riconosciuta (Stuttgart, 1762) • ''Il trionfo d'amore'' (Ludwigsburg, 1763) – libretto by Giampiero Tagliazucchi •
Demofoonte (Stuttgart, 1764) •
Il re pastore (Ludwigsburg, 1764) – libretto by Metastasio •
La pastorella illustre (Stuttgart, 1764) – libretto by Giampiero Tagliazucchi •
Temistocle (Ludwigsburg, 1765) •
Imeneo in Atene (Ludwigsburg, 1765) •
Il matrimonio per concorso (Ludwigsburg, 1766) – libretto by Gaetano Martinelli •
La critica (Ludwigsburg, 1766) •
Il Vologeso (Ludwigsburg, 1766) – libretto by Mattia Verazi •
Il matrimonio per concorso (Ludwigsburg, 1766) •
Il cacciatore deluso (Tübingen, 1767) – libretto by Gaetano Martinelli •
Fetonte (Ludwigsburg, 1768) • ''L'unione coronata'' (Solitude, 1768) •
La schiava liberata (Ludwigsburg, 1768) – libretto by Gaetano Martinelli •
Armida abbandonata (Naples, 1770) – libretto by Francesco Saverio de' Rogati •
Demofoonte (Naples, 1770) •
Ifigenia in Tauride (Naples, 1771) – libretto by Mattia Verazi • ''L'amante cacciatore'' (Rome, 1771) •
Le avventure di Cleomede (1771) – libretto by Gaetano Martinelli •
Cerere placata (Naples, 1772) •
Il trionfo di Clelia (Naples, 1774) – libretto by Metastasio ==Recordings==