Schedule C
https://www.musicalartists.org/contracts-and-agreements/schedule-c/turn-of-the-screw-the/

Turn of the Screw, The

Composer:
Benjamin Britten
Original Language:
English
Librettist:
Myfanwy Piper
Description:
Opera in Prologue and II Acts
Notes:

Text based on the novel by Henry James

Time:
Mid-19th Century
Place:
Bly, an English country house
Role Voice Part Classification
Governess Soprano L
Peter Quint * Tenor L
Miles Treble L
Flora Soprano L
Mrs. Gross Soprano F
Miss Jessel Soprano F
Prologue * Tenor S
* Quint/Prologue = L (the Prologue is often done by Quint)
 
Minimum Chorus:  No chorus