Stradella's music is every bit as colourful and intriguing as his biography. His oratorio Ester, liberatrice del popolo Hebreo, based on the Old Testament story of Esther, whose bravery saves the Jews from slaughter and exposes the wickedness of the King's counsellor Haman, exemplifies the composer's distinctive style, while conforming to the traditions of the 17th-century oratorio. Moral teaching, vocal virtuosity and sinuous melodies are combined, in a work that expresses plethora of affects and emotions – from Esther's sorrow to Haman's malevolence.