Question: Which opera was first performed earlier, La Wally or Rise and Fall of the City of Mahagonny?

Context articles: La Wally (film)
La Wally
Marc Blitzstein
Mahagonny-Songspiel
Inga Nielsen
Alabama Song
Alfredo Catalani
Rise and Fall of the City of Mahagonny
The Modern Theatre Is the Epic Theatre
Blindekuh (operetta)

La Wally is a 1932 Italian musical film directed by Guido Brignone and starring Germana Paolieri, Isa Pola and Carlo Ninchi.
 It is an adaptation of the 1892 opera "La Wally" by  Alfredo Catalani.
La Wally is an opera in four acts by composer Alfredo Catalani, to a libretto by Luigi Illica, first performed at La Scala, Milan, on 20 January 1892.
Marcus Samuel Blitzstein (March 2, 1905January 22, 1964), was an American composer, lyricist, and librettist.
 He won national attention in 1937 when his pro-union musical "The Cradle Will Rock", directed by Orson Welles, was shut down by the Works Progress Administration.
 He is known for "The Cradle Will Rock" and for his Off-Broadway translation/adaptation of "The Threepenny Opera" by Bertolt Brecht and Kurt Weill.
 His works also include the opera "Regina", an adaptation of Lillian Hellman's play "The Little Foxes"; the Broadway musical "Juno", based on Seán O'Casey's play "Juno and the Paycock"; and "No for an Answer".
 He completed translation/adaptations of Brecht's and Weill's musical play "Rise and Fall of the City of Mahagonny" and of Brecht's play "Mother Courage and Her Children" with music by Paul Dessau.
 Blitzstein also composed music for films, such as "Surf and Seaweed" (1931) and "The Spanish Earth" (1937), and he contributed two songs to the original 1960 production of Hellman's play "Toys in the Attic".
Mahagonny-Songspiel, also known as The Little Mahagonny, is a "small-scale 'scenic cantata'" written by the composer Kurt Weill and the dramatist Bertolt Brecht in 1927.
 Weill was commissioned in the spring to write one of a series of very short operas for performance that summer, and he chose to use the opportunity to create a "stylistic exercise" as preparation for a larger-scale project that they had begun to develop together (the two had met for the first time in March), their experimental 'epic opera' "The Rise and Fall of the City of Mahagonny" (1930).
Inga Nielsen (2 June 1946 – 10 February 2008) was a Danish soprano who had an active international opera career from 1971 to 2006.
 A child prodigy, Nielsen performed on American radio during the 1950s, beginning at the age of six, and also released some commercial recordings of Danish folk songs and Christmas carols as a child.
 She began her opera career performing parts in the lyric soprano repertory and then became an admired singer of dramatic soprano roles, beginning in the late 1980s.
 She was a particularly renowned interpreter of the roles of Konstanze in Wolfgang Amadeus Mozart's "Die Entführung aus dem Serail" and the title role in Richard Strauss's "Salome".
 She excelled in portraying some of the more rarely heard and demanding dramatic soprano roles such as the woman in Arnold Schoenberg's "Erwartung", Ursula in "Mathis der Maler" and Jenny in "Rise and Fall of the City of Mahagonny".
The "Alabama Song"—also known as "Moon of Alabama", "Moon over Alabama", and "Whisky Bar"—is an English version of a song written by Bertolt Brecht and translated from German by his close collaborator Elisabeth Hauptmann in 1925 and set to music by Kurt Weill for the 1927 play "Little Mahagonny".
 It was reused for the 1930 opera "Rise and Fall of the City of Mahagonny" and has been notably covered by The Doors and David Bowie.
Alfredo Catalani (19 June 1854 – 7 August 1893) was an Italian operatic composer.
 He is best remembered for his operas "Loreley" (1890) and "La Wally" (1892).
 "La Wally" was composed to a libretto by Luigi Illica, and features Catalani's most famous aria "Ebben?
 Ne andrò lontana."
 This aria, sung by American soprano Wilhelmenia Fernandez, was at the heart of Jean-Jacques Beineix’s 1981 cult movie "Diva".
 Catalani's other operas were much less successful.
Rise and Fall of the City of Mahagonny (German: Aufstieg und Fall der Stadt Mahagonny ) is a political-satirical opera composed by Kurt Weill to a German libretto by Bertolt Brecht.
 It was first performed on 9 March 1930 at the Neues Theater in Leipzig.
"The Modern Theatre Is the Epic Theatre" is a theoretical work by the twentieth-century German theatre practitioner Bertolt Brecht.
 It was composed in 1930 as a set of notes to accompany his opera "Rise and Fall of the City of Mahagonny".
 In it, he outlines his ideas for a "refunctioning" of the theatre, his principle of the 'separation of the elements" (conceived in opposition to Wagner's principle of the "integrated work of art"), and the "shifts of accent" involved in the move from traditional "dramatic" theatre to his own "epic" theatre.
 It also contains one of the earliest formulations of "Gestus".
Blindekuh ("Blind Man's Buff") is an operetta written by Johann Strauss II.
 It was first performed in Vienna at the Theater an der Wien on 18 December 1878, its composition delayed by the death of Strauss' wife, Jetty Treffz.
 The overture was performed earlier at a charity event.
 The operetta was not very well received, having been withdrawn after only sixteen performances, but the overture established itself in the repertoire of many orchestras.