It would be a better introduction to ghosts than the ship's crew had. I wonder if the visitors will get to hear her singing.
Speaking of Marissa, I wonder if Hornet ever spent time just listening to her during her guard of Hallownest? She said that she was popular before the Fall of Hallownest, so maybe Hornet would have liked to enjoy something that reminded her of better times.
In the future, will we see Marissa the Songstress (even if she is a ghost) and Weiss doing a singing duo?