^ She also went through a surgery on her vocal chords, didnt she? That might have really had something with it, bit either way her vocals did not go THAT bad not even a bit
I don't think her voice changed much, I didn't even notice a change tbh lol She sounded great as usual imo on both JAPONESQUE and BV Tour, had some troubles on the 2nd limited live (but then she was sick, that's another issue), great again during WOML Tour and then she had some missteps towards the end of the year, but I think that's cause she was singing the hell out of her, she was really busy last year. I hope she recovered properly since THE ARTIST and won't pull it too much on this year (but thn the tour goes on till November........)
And about those songs on the jacket... A year ago I'd have said "of course they're gonna be on the setlist, why would they put those names there and not use them?", buuut ayu used some songs lyrics on the TA Tour goodies and they did not make it to the show, so I'm not sure this time

But I do think SHHH! is gonna be a song name, it would TOOO random if not. If it's gonna be a single, I hope she releases Cupcake with it!