Bonaparte Beethoven referred to his symphony some months before it premièred under this name. A few months later he lost faith in Bonaparte (when proclaimed Emperor of France), tore out the title page and before the first performance in April 1806 renamed the symphony "Eroica".
Which 20th century American composer wrote the American Festival overture in 1939, and Symphony No. 3 considered the most important new work of 1942, and won the Pulitzer Prize in 1943?