The poem is an allegory about writing, about art. In the first lines the speaker tells us that she will rise from her troth with dead. It means that she was dead in an artistic sense, that she wasn't practicing her art, but now, she decided to rise from the dead.
In the next lines she talks about sweetening her bread and her cup with a gift. Bread and cup could be a reference to Christianity and the God's supper.
In the next lines speaker talks about chiseling a bowl for red and wine. Her bowl is therefore made for variety and not for one specific type just like she intends her art to touch the hearts of variety of people-which she further notes on in the poem.
The speaker then talks about summoning different mythological creatures. This means that she wants to capture her readers' attention with the extraordinary, make the reader think; after that she talks about cutting a familiar thing into the bowl to relate to the reader.
Now it's time for the wine, for her art to sing about the beauty of the nature. The song is so beautiful that it will make lovers want to confess to each other.
The speaker's song will capture everyone and want them to get out of their comfort zones: wanderers to want to go back home and those at home want to wander, those used to the land want to go out into the sea and those used to the safety of a fireplace want to go out beneath the stars.
The speaker hopes her song, her art to move people in such a way that it makes them want to change themselves, to explore the unknown.
