If you haven't ordered your music score yet, you may be in luck, as this note from Jim Hedlund explains:
"I have two used copies of the Sea Symphony score, from a couple who bought them online but who decided not to sing this semester. They are available on loan for anyone who wishes to use them. I will bring them to next Wednesday's rehearsal. They must be returned at the end of the semester."
If you'd like to reach out to Jim about this before rehearsal, his email address is jhedlund@sprynet.com.