(Soprano, cello, piano & fixed electronics) 10'

Preview score

Programme note

Invocation intertwines lines from two ancient Egyptian magical hymns. The original hymns are syncretic fusions of Roman-Egyptian polytheistic beliefs and rituals and early Christian and Gnostic beliefs.


One hymn is a supplication to Hecate, an ancient goddess of the night, moon, wilderness, liminal spaces, and protector of the newly-born. Pre-dating Greek mythology, Hecate was originally thought of as a powerful goddess and protector of women with her own cult of worshippers and eunuchs. The hymn is a paean featuring expiatory offerings of foods and sacrifices.


The other hymn is startlingly threatening in tone. It demands that the supplicant’s desires are met, and its lines form a curse. The focus is cold and commanding, and the tone is menacing. The singer insists that if his will is not done, “tomorrow will not come”. With Invocation I wanted to set the hymns' inverse power dynamics within and against each other.


Over time, representations of Hecate shifted, and she eventually came to be a chthonic hag associated with evil, witchcraft, magic, and necromancy. Her name appears on surviving examples of stone tablets inscribed with curses.


While writing Invocation I was thinking about how a powerful pre-Hellenistic goddess could be reduced to a hag commanded by mortal beings.


With thanks to Fresh Squeezed Opera for commissioning Invocation as part of "The Female Gaze".


Electronic setup

You will need:

To play the fixed electronics


  • A laptop with free QLab software (there is currently no tablet/iPad version of QLab)

  • A MIDI foot pedal (an electronic piano expression/sustain pedal won't work) and cable to connect it to the laptop

  • Stereo speakers and mixing desk

  • Audio interface and cables from laptop to mixing desk


For amplification (required)


  • Directional microphones

  • Microphone stands

  • XLR cables connecting the microphones to the mixing desk

  • Speakers

Image by Ryan Plomp
Gemma Peacocke - Invocation.jpg