Köchel catalogue in the context of "The Magic Flute"

The Marriage of Figaro (Italian: Le nozze di Figaro, pronounced [le ˈnɔttse di ˈfiːɡaro] ), K. 492, is a commedia per musica (opera buffa) in four acts composed in 1786 by Wolfgang Amadeus Mozart, with an Italian libretto written by Lorenzo Da Ponte. It premiered at the Burgtheater in Vienna on 1 May 1786. The opera's libretto is based on the 1784 stage comedy by Beaumarchais, La folle journée, ou le Mariage de Figaro ("The Mad Day, or The Marriage of Figaro"). It tells how the servants Figaro and Susanna succeed in getting married, foiling the efforts of their philandering employer Count Almaviva to seduce Susanna and teaching him a lesson in fidelity.

Considered one of the greatest operas ever written, it is a cornerstone of the repertoire and appears consistently among the top ten in the Operabase list of most frequently performed operas. In 2017, BBC News Magazine asked 172 opera singers to vote for the best operas ever written. The Marriage of Figaro came in first out of the 20 operas featured, with the magazine describing it as being "one of the supreme masterpieces of operatic comedy, whose rich sense of humanity shines out of Mozart's miraculous score".

Die Entführung aus dem Serail (German: [diː ʔɛntˈfyːʁʊŋ ʔaʊs dɛm zeˈʁaɪ]) (K. 384; The Abduction from the Seraglio; also known as Il Seraglio) is a singspiel in three acts by Wolfgang Amadeus Mozart. The German libretto is by Gottlieb Stephanie, based on Christoph Friedrich Bretzner's Belmont und Constanze, oder Die Entführung aus dem Serail. The plot concerns the attempt of the hero Belmonte, assisted by his servant Pedrillo, to rescue his beloved Constanze from the seraglio of Pasha Selim. The work premiered on 16 July 1782 at the Vienna Burgtheater, with the composer conducting.

Don Giovanni (Italian pronunciation: [ˈdɔn dʒoˈvanni]; K. 527; full title: Il dissoluto punito, ossia il Don Giovanni, literally The Rake Punished, or Don Giovanni) is an opera in two acts with music by Wolfgang Amadeus Mozart to an Italian libretto by Lorenzo Da Ponte. Its subject is a centuries-old Spanish legend about a libertine as told by playwright Tirso de Molina in his 1630 play El burlador de Sevilla y convidado de piedra. It is a dramma giocoso blending comedy, melodrama and supernatural elements (although the composer entered it into his catalogue simply as opera buffa). It was premiered by the Prague Italian opera at the National Theatre (of Bohemia), now called the Estates Theatre, on 29 October 1787. Don Giovanni is regarded as one of the greatest operas of all time and has proved a fruitful subject for commentary in its own right; critic Fiona Maddocks has described it as one of Mozart's "trio of masterpieces with librettos by Da Ponte".

The Concerto for Flute, Harp, and Orchestra in C major, K. 299/297c, is a concerto by Wolfgang Amadeus Mozart for flute, harp, and orchestra. It is one of only two true double concertos that he wrote (the other being his Piano Concerto No. 10; though his Sinfonia Concertante for Violin, Viola, and Orchestra could just as well be considered a "double concerto"), as well as the only piece of music by Mozart for the harp. The piece is one of the most popular such concertos in the repertoire, as well as often being found on recordings dedicated to either one of its featured instruments.

Exsultate, jubilate (Exult, rejoice), K. 165, is a 1773 motet by Wolfgang Amadeus Mozart.

Idomeneo, re di Creta ossia Ilia e Idamante (Italian for Idomeneus, King of Crete, or, Ilia and Idamante; usually referred to simply as Idomeneo, K. 366) is an Italian-language opera seria by Wolfgang Amadeus Mozart. The libretto was adapted by Giambattista Varesco from a French text by Antoine Danchet, based on a 1705 play by Crébillion père, which had been set to music by André Campra as Idoménée in 1712. Mozart and Varesco were commissioned in 1780 by Karl Theodor, Elector of Bavaria for a court carnival. He probably chose the subject, though it may have been Mozart. The work premiered on 29 January 1781 at the Cuvilliés Theatre in Munich, Germany.

The Adagio and Rondo, K. 617, is a quintet composed by Wolfgang Amadeus Mozart for glass harmonica, flute, oboe, viola and cello. Completed on May 23, 1791 (the date indicated in Mozart's own list of his works), it was written for Marianne Kirchgessner, a blind glass harmonica virtuoso, who played the first performance in the Burgtheater Akademie on June 10, 1791, and subsequently performed it at the Kärtnertortheater on August 19, 1791.

The autograph manuscript is in the British Library as part of the Stefan Zweig Collection. It was purchased by Zweig from a Berlin auction house in 1930.