Schedule C
https://www.musicalartists.org/contracts-and-agreements/schedule-c/jason-and-the-argonauts/

Jason and the Argonauts

Composer:
Gregory Spears
Original Language:
English
Librettist:
Kathryn Walat
Description:
Opera in Four Parts
Notes:

based on Greek mythology

Time:
antiquity
Place:
around the Mediterranean
Role Voice Part Classification
Jason Tenor L
Female Narrator/Atalanta/Siren/Medea/Lamb Soprano F
Male Narrator/Orpheus/Lamb Baritone F
Chiron/King Pelias/King Aeetes/Dragon Bass-Baritone F
All combined roles are as specified in the score.
 
Minimum Chorus:  No chorus