This piece marked the first use of three French horns in symphonic orchestration.  
This piece marked the first use of three French horns in symphonic orchestration.  An early C sharp is reinterpreted as D flat at the start of a downward resolution into a solo for first horn.  This occurs during the recapitulation, which sees the second horn come in four bars before the rest of the orchestra.  Its composer adapted the musical themes of its finale from his "Prometheus" Variations, and it shares its nickname with the seventh of Liszt's Transcendental Etudes.  The second movement Marche fun?re is sometimes extracted from, FTP, this symphony "Composed to celebrate the memory of a great man," originally dedicated to Napoleon and written by Beethoven.
This piece marked the first use of three French horns in symphonic orchestration.  
Beethoven's {Symphony} No. {3} in E-flat major or Eroica or Beethoven's Opus 55 (accept just 3 or Third or Opus 55 after Beethoven is mentioned)