Prometheus, S. 99

In 1850, Franz Liszt composed an overture and eight choruses with orchestra accompaniment for Johann Gottfried Herder's Der entfesselte Prometheus (Prometheus Unbound), a mythological work of thirteen scenes meant as a sequel to Aeschylus's Prometheus Bound. This was to be performed for the Herder Festival scheduled for August of that year in Weimar. Liszt gave indications for the orchestration, and from these notes Liszt's helper Joachim Raff produced a score which was used in the first performance. This concert commemorated the unveiling of a monument to Herder on 24 August 1850. In 1855 Liszt revised both the overture and the choruses, added new instruments, mainly woodwinds, which resulted in the expansion of the overture to a symphonic poem and the choruses to a concert stage work. The symphonic poem was first performed on 18 October 1855.