Question: Doktor Faust and Rise and Fall of the City of Mahagonny are both what?

Context articles: The Modern Theatre Is the Epic Theatre
Inga Nielsen
Rise and Fall of the City of Mahagonny
Marc Blitzstein
Luke Faust
Doktor Faust
Irvin Faust
Alabama Song
Mahagonny-Songspiel
Claudia Garde

"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".
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".
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.
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".
Luke Faust (born 1936) is an American musician.
 In the early 1960s he played a five-string banjo and sang Appalachian ballads, at The Gaslight Cafe in Greenwich Village, New York City.
 For five or six years Faust performed with Jerry Rasmussen.
 One of his fellow entertainers at the Gaslight was Bob Dylan who described Faust as "Someone closer in temperament to me."
Doktor Faust is an opera by Ferruccio Busoni with a German libretto by the composer himself, based on the myth of Faust.
 Busoni worked on the opera, which he intended as his masterpiece, between 1916 and 1924, but it was still incomplete at the time of his death.
 His pupil Philipp Jarnach finished it.
 More recently, in 1982, Antony Beaumont completed the opera using sketches by Busoni which were previously thought to have been lost.
 Nancy Chamness has published an analysis of the libretto to "Doktor Faust" and a comparison with Goethe's version.
Irvin Faust (June 11, 1924 - July 24, 2012) was an American author and educator.
 He was born in Brooklyn, New York to Morris and Pauline Faust and grew up in Queens, New York and attended the Queens College of the City of New York (now known as the Queens College of the City University of New York) and the City College of New York (now known as the City College of the City University of New York), where he earned a B.S. degree in 1949.
 Faust attended Columbia University for graduate studies, earning an M.A. in 1952 and an Ed.D in 1960.
 From 1943 to 1946, Faust served with the U.S. Army during and after World War II.
 He served with the Army in Europe and the South Pacific.
 Faust married Jean Satterthwaite in 1959.
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.
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).
Claudia Garde (born 1966 in Bremen) is a German film director and screenwriter.
 She has worked for the German TV-series "Stubbe – Von Fall zu Fall", "Doktor Martin", "Flemming" or the series "Tatort".