So this isn’t a secret but I do briefly want to state.
In my time playing Arx, my character (and myself) developed a theory that primum = potential and magic = story. Essentially beings had potential (primum) and through force of will they enacted their own desires on the dream to gain an outcome (magic). Assuming it was intentional I want to say it’s very clever to make a magical system written in a cooperative RP style game basically run on story. It’s something everyone should be able to understand and it’s just wishywashy enough that you’re not bound to any magical rules lawyering.
That is one of the reasons I thought songs got brought up so much besides being a potential nod to Tolkien with his whole song of creation thing for the genesis of Middle Earth. Songs are the oldest form of storytelling and a bunch of critical information was conveyed via songs or poems and a lot of cool magicky stuff was initiated by songs.
Anyway if it wasn’t intentional than I enjoyed it. If it was intentional than kudos to the staff team for taking that direction.