To whom are we writing for

Possibly the sense is the same: all of these--
Us writing on a wall: millennials and those 
Past who scribbled their names on slates 
If only to say "I was here". Or "Joni was here".
Some form of validation knowing our own passing.
Finite, are we not
Deliberate to leave a trace of ourselves here?
Evidence of existence; fossil of memories...

(I have only sung alone in public once:
holding a guitar borrowed from Music Majors;
in the middle of a kiosk, love then had audacity
to call everyone's attention as introduction:
"Hi everyone, listen"--did I say it that way
I can no longer remember--"I have a song for..."
The girl blushed but remained on her seat--
I think now, it was probably out of confusion
or public embarrassment--to endure

Such shameless proclamation. THEN a string 
Strummed SNAPPED.) Who can remember that 
On their own? Recall names, retell the story,
Laugh at appropriate moments in the telling?
It has been years before this: This
Writing on the wall about it.