Summer Diary was a pain to hear. Ayu used her cutesy voice and I've noticed that it's harder for her to be on key when she does that.
And I could barely hear the back up singers during this song, I was about to sing along with the "na na na na", but I couldn't hear it
It was like Ayu's mic was put on the highest volume and the back ups were on lowest.
That's one of the best things with Ayu's rockish songs, she usually sings them with her real dark voice
I really enjoyed Hanabi <3