Compositional sketches and notes for both "Wozzeck" and the from Three Pieces for Orchestra that Berg made during the war are strewn with disjointed fragments of military ordinances and terminology. In a draft page of the act 1, scene 2 libretto, Berg included notations in the dialogue that refer to Austrian army bugle calls. These military signals were later inserted into the score in a modified, slightly atonal form, but were still likely recognizable to Austrian audiences of the period. The scene of snoring soldiers in the barracks during act 2, scene 5 was influenced by Berg's similar such experience: "this polyphonic breathing, gasping, and groaning is the most peculiar chorus I've ever heard. It is like some primeval music that wells up from the abysses of the soul ..."