Symphony No. 3 (Beethoven) which the bass theme is heard as the first variation before the main theme ultimately appears. This again parallels the structure of the Opus 35 variations themselves. Finally, the loud E chord that begins the Opus 35 variations themselves is moved here to the beginning of the first movement, in the form of the two chords that introduce the first movement. Alternatively, the first movement's resemblance to the overture to the comic opera "Bastien und Bastienne" (1768), composed by twelve-year-old W. A. Mozart, has been noted. It was unlikely that Beethoven knew of that unpublished composition. A possible explanation is
D'Oyly Carte Opera Company popular Offenbach operetta "La Périchole" he brought W. S. Gilbert and Arthur Sullivan together. On tour in 1871, Carte had conducted Arthur Sullivan's one-act comic opera "Cox and Box", which received an 1874 London revival. In 1873, W. S. Gilbert had offered a libretto to Carte about an English courtroom, but at the time Carte knew of no composer available to set it to music. Carte remembered Gilbert's libretto and suggested to Gilbert that Sullivan write the music for a one-act comic opera, "Trial by Jury", which was quickly composed and added to the Royalty's bill in March 1875. The