What does it mean by "Visualised by Ayumi"

[Jennie Mae]

I always had this image in mind:
Ayu: So, I'm going to be in a baroque style dress on a balcony, singing HAPPY ENDING. There will be a guy under the balcony, and people in black robes try to stop them. Meanwhile, women in powdered wigs will try to distract me. Then the guy will get carried off by the people in black robes, and I'll freak out and leave. And then Peco and Princess will sing a little bit. Capeesh?
People in charge: Yes Miss Hamasaki.