The majority of operas were made around the Orpheus legend. The most famous of these was the earliest performance of Monteverdi's "L'Orfeo." in 1607. Nevertheless, I highly believe the answer to this is B. Orpheus.
Are you wanting to know the pitch below F#? if so that would be F.
Like this? If this is good, I can give you the song names in order:
Sometimes I don't wanna be happy
Some days, things just take way too much of my energy
I just wanna have a good day
Ain't got no tears left to cry
I got plenty of roommates and they're all in my mind
When you are young, they assume you know nothing
When I hear your voice, I know I'm finally free
And you're right here by my side
All i have is myself at the end of the day
They can't steal the love you're born to find
