In the new cryptic notes mode, you can get the DA CAPO music box as furniture! And when you interact with it, it plays the song “Her!” Do you have any idea what this could mean?
I saw! I'm very excited, given DA CAPO is perhaps one of my favorite "lore entries" of Identity V.
I have a couple ideas on what Her could mean. This isn't the melody it plays in DA CAPO, so either they changed the melody it plays, the melody is a variation of "Her," or there are multiple music boxes.
Unlike Time of Reunion, we don't know who composed Her. We have two different suspects: Mrs. DeRoss and Frederick Kreiburg. Mrs. DeRoss composed the "Nightingale leitmotif," which was later used by Frederick in a commission to compose Time of Reunion (Frederick Eighth Deduction). Or, like Time of Reunion, it's possible that it was partially composed by Mrs. DeRoss but finished by Frederick.
Something important to note about Her being the melody is the purpose of the music box: at the end of DA CAPO, it calms down Orpheus, either Nightmare or Detective (or Charm), depending on whether it takes place before or after MEMORY. We don't know who turned in the music box to do this. If it was during the Final Game, it was most likely Alice or Frederick, due to neither being fully accounted for. If it was after MEMORY, it was likely Reichenbach.
The other thing to note about Her is that it's Memory's theme. Something interesting to note is the contrast between how Detective imagines the relationship between Memory and Nightmare vs how it's portrayed outside of his perspective. In Memory's Video and Time of Reunion, Detective imagines Novelist as the hero while Nightmare tries to kill Memory and, according to the Journalist Concept Video, succeeding so. Nightmare himself finds association between Memory's existence as a manifestation of childhood nostalgia and his own, the product of childhood trauma. In external media, he is portrayed as a father to Memory, the same as Novelist. Nightmare doesn't seem to host the same perception of Memory as something to kill the way Detective thought he did.
Putting these two things together, I think it's possible to speculate Memory and what she represents (the few moments of joy Orpheus had in childhood) is a balm to Nightmare. One strong enough to calm him down after mauling Norton. I'm curious, then, whether Alice turned on the music box to calm him down, given saving Orpheus was one of her two rarities, or if it was Frederick for unknown purposes, since it was seemingly set up to trap Melly and Norton as well. Very curious.
Hopefully We'll get more information soon.
