Angor wasn't confident in the final outcome because the illusion presented by an alchemy omen tended to differ from what he originally made.
For instance, he didn't hear any music during the challenge. And as far as he could remember, he placed the "Goddess" on top of a giant turtle and used his nightmare illusions to create the shadows of many other mermaids and sea monsters to compose a storyline for the illusion. But none of these showed up.
Nevertheless, he should check his music box to find out its quality.
Since the challenge appeared to be pretty difficult and even had a time limit, he wondered which tier his music box ended up at.
Excited, he stepped out of the exit.
…
Outside, Angor suddenly opened his eyes and saw his music box quietly floating in front of him. As he watched, the item absorbed the visible energy streams around it that were left behind by the alchemy omen.
