Sub olea pacis et palma virtutis conspicua orbi regia Bohemiae Corona: Melodrama de Sancto Wenceslao (Under the Olive Tree of Peace and the Palm Tree of Virtue the Crown of Bohemia Splendidly Shines Before the Whole World: Melodrama to Saint Wenceslaus), ZWV 175, is an extensive composition, written in 1723 by Czech baroque composer Jan Dismas Zelenka.
It was performed in the presence of the imperial couple at the Jesuit Clementinum in Prague in the afternoon of 12 September 1723, with Zelenka himself as conductor.
Besides the eight soloists and musicians of the orchestra, a further 142 persons, including dancers and walk-on actors, were involved in that grandiose performance.
The principal characters, who are allocated the majority of the musical numbers are allegorical figures that appear throughout all three acts of the drama.
The work opens with an orchestral Sinfonia scored for 3 instrumental groups comprising two trumpets with timpani, a pair of oboes with bassoon and string ensemble with continuo.
There were used: 17 violins, 7 viols, 5 cellos, 3 double basses, 4 oboes, 3 flutes, 2 bassoons, 2 recorders, 2 trumpets, 1 chalumeau and theorbo, timpani, harpsichord and positive organ.