The sparrow song

In the middle of my lonely mind
amidst a crowd of kindred souls
In a place that you can't find
No, no, no
On the beach of a desert isle
Yeah, yeah, yeah
I'm crying but still I smile

When you're flying so high
you can fall so low
and you try to be smart
because it's all you know
Maybe you take a step 
into life on your own
and maybe I just drown
in despair on my own
and the water's too deep
and the sun is too high
when you're falling asleep
the moon seems to cry

On a plain of desolate screams
yeah, yeah, yeah
No one hopes and no one dreams
There's no point in going on
on, on, on
Sorrow in the sparrow's song

Could you tell me who I am?
I would like