For this line.... which is dactylic hexameter...
when figuring out the feet and how the meter goes... would you elight the O's because they fall before H's ? I am wondering if there is a general rule whether you would leave them, or not, since it is vocative.
Hymen O Hymenaee, Hymen ades O Hymenaee!
Hymen (O) Hymenaee, Hymen ades (O) Hymenaee!