Finding I can fly (part 1)

So once ago,
I broke a wing.
And fell very low.
Lost my voice to sing.

I touched the earth,
and felt her shudder.
Laughed with no mirth,
could gain no flutter.

As I look now,
I still see them pass.
Au revoir, Cao!
This bubble of glass.

It started off small,
and grew so large.
circular wall,
with electric charge.

You know me well,
but far from the truth.
in the glass balls spell,
grown old in youth.

I know it's been
said a million times,
but that was then,
these are my rhymes.

So take my hand,
hide your fears.
And understand,
I contain no mirrors.

I can't be you,
or any form.
Though I can't float too,
I'll flutter in a storm.