• Allegro con brio
• Marcia funebre. Adagio assai
• Scherzo. Allegro vivace
• Finale. Allegro molto - Poco Andante - Presto

There is significant evidence that the Eroica, perhaps unlike Beethoven's other symphonies, was constructed back-to-front. The theme used in the fourth movement, including its bass line, originate from the seventh of Beethoven's 12 Contredanses for Orchestra, WoO 14, and also from the Finale to his ballet The Creatures of Prometheus, Op. 43, both of which were composed in the winter of 1800–1801. The next year, Beethoven used the same theme as the basis for his Variations and Fugue for Piano in E♭ Major, Op. 35, now commonly known as the Eroica Variations due to the theme's re-use in the symphony. It is the only theme that Beethoven used for so many separate works in his lifetime, and each use is in the same key of E♭ major.

The "Wielhorsky Sketchbook", Beethoven's principal sketchbook for 1802, contains a two-page movement plan in E♭ major that directly follows the sketches for the Opus 35 Variations, which has been identified as being intended for the Third Symphony. While the movement plan gives no explicit indication regarding the finale, Lewis Lockwood argues that "there cannot be any doubt that Beethoven intended from the start" to use the same theme (and bass of the theme) that he had just fleshed out in the Opus 35 Variations. Thus, it is argued that Beethoven's initial conception for a complete symphony in E♭ – including its first three movements – emerged directly from the Op. 35 Variations.

The first movement's main theme (mm. 2–6) has thus been traced back to the bass line theme of the Opus 35 variations (E♭, B♭↓, B♭↑, E♭) by way of intermediate versions found in one of Beethoven's sketchbooks. In the second movement, the combined tonality (melody and bass) of the Opus 35 theme's first four bars – E♭, B♭↓, B♭7(A♭)↑, E♭ – appears in slightly altered form as the funeral's march's second theme (E♭, B♭↓, A♭↑, E♮) (mvt. II, mm. 17–20), followed by two sudden forte B♭s that echo later elements of the theme. That same tonality then appears unaltered as the scherzo's main theme (mvt. III, mm. 93–100).

Thus, the first three movements can be viewed as symphonic-length "variations" on the Opus 35 theme, ultimately anticipating the theme's appearance in the fourth movement. Moreover, Beethoven's choice to begin the symphony with a theme adapted from the bass line is also paralleled in the fourth movement, in 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 that Mozart and Beethoven each coincidentally heard and learned the theme from elsewhere.

eethoven originally dedicated the third symphony to Napoleon Bonaparte, who he believed embodied the democratic and anti-monarchical ideals of the French Revolution. In the autumn of 1804, Beethoven withdrew his dedication of the third symphony to Napoleon, lest it cost him the composer's fee paid him by a noble patron; so, Beethoven re-dedicated his third symphony to Prince Joseph Franz Maximilian Lobkowitz – nonetheless, despite such a bread-and-butter consideration, the politically idealistic Beethoven titled the work "Buonaparte". Later, about the composer's response to Napoleon having proclaimed himself Emperor of the French (14 May 1804), Beethoven's secretary, Ferdinand Ries said that:


Bonaparte, First Consul, by Jean Auguste Dominique Ingres
In writing this symphony, Beethoven had been thinking of Buonaparte, but Buonaparte while he was First Consul. At that time Beethoven had the highest esteem for him, and compared him to the greatest consuls of Ancient Rome. Not only I, but many of Beethoven's closer friends, saw this symphony on his table, beautifully copied in manuscript, with the word "Buonaparte" inscribed at the very top of the title-page and "Ludwig van Beethoven" at the very bottom ...

I was the first to tell him the news that Buonaparte had declared himself Emperor, whereupon he broke into a rage and exclaimed, "So he is no more than a common mortal! Now, too, he will tread under foot all the rights of Man, indulge only his ambition; now he will think himself superior to all men, become a tyrant!" Beethoven went to the table, seized the top of the title-page, tore it in half and threw it on the floor. The page had to be recopied, and it was only now that the symphony received the title Sinfonia eroica.

An extant copy of the score bears two scratched-out, hand-written sub-titles; initially, the Italian phrase Intitolata Bonaparte ("Titled Bonaparte"), secondly, the German phrase Geschriben auf Bonaparte ("Written for Bonaparte"), four lines below the Italian sub-title. Three months after retracting his initial Napoleonic dedication of the symphony, Beethoven informed his music publisher that "The title of the symphony is really Bonaparte". In 1806, the score was published under the Italian title Sinfonia Eroica ... composta per festeggiare il sovvenire di un grande Uomo ("Heroic Symphony, Composed to celebrate the memory of a great man").

Movements	Recording	Ensemble	Duration
Allegro con brio
	Beethoven: 9 Symphonies	Orchestre Révolutionnaire et Romantique	0:15:37
Marcia funebre. Adagio assai
	Beethoven: 9 Symphonies	Orchestre Révolutionnaire et Romantique	0:12:41
Scherzo. Allegro vivace
	Beethoven: 9 Symphonies	Orchestre Révolutionnaire et Romantique	0:05:33
Finale. Allegro molto - Poco Andante - Presto
	Beethoven: 9 Symphonies	Orchestre Révolutionnaire et Romantique	0:10:42