Editing 1931 in music (section)

==[[Opera]]==
*[[Paul Abraham]] – ''[[Die Blume von Hawaii]]'' (operetta), staged 24 July, in Leipzig, [[Neues Theater (Leipzig)|Neues Theater]]
*[[George Antheil]] – ''Helen Retires'' (not performed until 1934)
*[[Arthur Benjamin]] – ''[[The Devil Take Her]]'', staged 1 December, London, Royal College of Music
*[[Alfredo Casella]] – ''[[La donna serpente (opera)|La donna serpente]]'', op. 50 (not performed until 1932)
*[[Gustave Charpentier]] – ''Orphée'' (unfinished)
*[[Werner Egk]] – ''Der Löwe und die Maus'' (children's opera)
*[[George Enescu]] – ''[[Œdipe (opera)|Œdipe]]'', op. 23 (not performed until 1936)
*[[Walter Goehr]] – ''Malpopita'' (written for radio broadcast; first live performance 2004)
*[[Louis Gruenberg]]
**''[[The Emperor Jones (opera)|The Emperor Jones]]'', op. 36 (not staged until 1933)
**''Jack and the Beanstalk'', op. 35, staged 20 November, [[Juilliard School]], New York
*[[Jesús Guridi]] – ''La cautiva'', staged 10 February, Calderón Theater, Madrid 
*[[Arthur Honegger]] – ''La belle de Moudon'' (operetta), staged 30 May, in [[Mézières, Vaud|Mézières]], [[Théâtre du Jorat]] (Switzerland)
*[[Jacques Ibert]] – ''Gonzague'', staged 17 December, Monte Carlo
*[[Mikhail Ippolitov-Ivanov]] – ''Zhenit'ba'' [The Marriage], op. 70, staged 18 October at the Radio Theatre, Moscow [first of the four acts is by Musorgsky]
*[[Lev Knipper]] – ''Goroda i godï'' [Cities and Years], op. 22
*[[Eduard Künneke]] – ''Nadja'', op. 28, performed in Kassel
*[[Gian Francesco Malipiero]]
**''[[Torneo notturno]]'', staged 15 May at the [[National Theatre Munich|Nationaltheater]] in Munich 
**''I trionfi d'amore'', triptych (unperformed except for the second opera, ''Mascherati'', not staged until 1954)
*[[Italo Montemezzi]] – ''La notte di Zoraima'', staged 31 January, [[La Scala|Teatro alla Scala]], Milan
*[[Hans Pfitzner]] – ''[[Das Herz]]'', op. 39, staged 12 November, simultaneously in Berlin and Munich
*[[Jean Roger-Ducasse]] – ''Cantegril'', staged 9 February at the [[Opéra-Comique]] (Salle Favart), Paris
*[[Germaine Tailleferre]] – ''Zoulaina'' (never performed)
*[[Deems Taylor]] – ''[[Peter Ibbetson (opera)|Peter Ibbetson]]'', op. 20, staged 7 February, [[Metropolitan Opera]], New York
*[[Gabriel von Wayditch]] – ''Horus'' (not staged until 1939)
*[[Egon Wellesz]] – ''[[Die Bakchantinnen]]'', staged 20 June, [[Wiener Staatsoper]], Vienna
*[[Jaromir Weinberger]] – ''Milovaný hlas'' [''Die geliebte Stimme''], staged 28 February, Munich
*[[Ermanno Wolf-Ferrari]] – ''[[La vedova scaltra]]'', staged 5 March, at the [[Teatro dell'Opera di Roma]], Rome
*[[Eugène Ysaÿe]] – ''Piére li houïeu'' [Peter the Miner], staged 4 March in Liège