I’ve heard it for so long to by-heart it!
here’s the lyrics….

Like untied shoelaces
I keep tripping
Like a small bird that is lost
It comes into my eyes

Like winter clothes that is wet from rain
My heart is heavy
On days when there are
Shadows on top of my face

I hear a sad heart
That is hidden deep inside

Smile, without a word
Smile, just like that, for a moment
Though I don’t know when it’ll end
So that smile can be strength to me

Smile, even if it’s just here
Smile, just like that
Though I don’t know you
It’s nice to see you smile
Smile

Like losing a clue
My heart is heavy
On days I pace across the bottom of the stairs
And blankly sit down

Painful tears that I tried to hide
Fall down

Smile, without a word
Smile, just like that, for a moment
Though I don’t know when it’ll end
So that smile can be strength to me

Smile, even if it’s just here
Smile, just like that
Though I don’t know you
It’s nice to see you smile
Smile