I also had experience for the first time in this concert.
Tears flowing down my cheeks during the song "Keredo-soraha-ao ~close friend~" at the end of concert, when I noticed.
I think this was my first time to have such feeling "Tears flowing when I notice."
We can know before tears actually come out.
But I noticed it after tears came out.
The feeling is that "VOCAL" isn't vocal but was ensemble as one of the instrument of orchestra as ASKA said.
It was the best concert ever regarding the song in pure except stage direction.
This came from the power of orchestra?
Or the order of the songs?
Was it because of the arrange of each song?
Otherwise, it resulted from my internal emotion that the concert was my first time in Japan in 4 years.
Whatever the reason is, I'm really glad to joining such wonderful concert in my last month of my twenties.