Other instrumental works by Julia Perry include "Requiem for Orchestra "(also known as "Homage to Vivaldi "because of themes inspired by composer Antonio Vivaldi), a number of shorter orchestral works; several types of chamber music; a violin concerto; twelve symphonies; and two piano concertos. Her vocal works include a three-act opera and "The Symplegades", which was based on the 17th century Salem witchcraft panic. The opera took more than ten years to write. She also composed an operatic ballet with her own libretto, based on Oscar Wilde's fable "The Selfish Giant", and in 1976 composed "Five Quixotic Songs" for bass baritone in and "Bicentennial Reflections" for tenor solo in '77.