For fun, you can listen to the music that these posters refer to by clicking on the links below each poster. Enjoy!
Hector Berlioz's Symphonie fantastique. Fourth movement: "Marche au supplice" (March to the Scaffold). Link.
Richard Wagner's Der Ring des Nibelungen. Opera one of four: Das Rheingold. Link.
Igor Stravinsky's The Rite of Spring. Link.
This one isn't based on a specific piece, but here is good example of "new music". I find the performer's outfit very befitting.