Interesting. I did think that 'yabuhii' part sounded a bit different, but I thought it was related to the recording. Today I learned lolYep, it's definitely Wakana.
I admit I'm not used to hearing Kaori sing in the upper part of her range. Are there any clearer performances the showcase her range?It's definitely Yuriko main, and I guess it's Kaori singing the second voice. Which probably means Kaori is also second voice with Wakana on 1:13.
Interesting that Yuriko lead moonlight melody when Asuka wasn't there. Also, it seems that Hanamori no Oka was performed.
I hope like they did all those years ago we get some kind of digest from their performance at Anime Expo. It's better than nothing.