Did you know, there are two types of clown from Commedia dell'Arte, Pierrot and Harlequin, google is your friend for more informations.
In Kokuhaku no Funsui Hiroba, Miya sings "watashi pierrot" while looking at the window of the bus she was riding. The pv of this song is one of my fav from BK because there is such a power even without the lyrics.
I'm suffering
Because you're here
I'm so sorry
It's too sudden
I was only thinking
of myself
I'm such a fool
I love you
So much my chest hurts
I'm afraid, but
I've spoken my mind