not really rap but o well , been used in a rap song written by p-dizzle
 

"headphones"
writer: TURBAN
turn down the music
and for once look around
your all alone and you dont care
because your invincible
with those head phones on

and every word that plays in your head
you just listen and take in
for once you dont have to cry
and your smile is back even
though your all alone
you just shut it out and go into your world
and its just like you to sit there
and mumble the words

turn down the music
and for once look around
your all alone and you dont care
because your invincible
with those head phones on

and when you realize that
there is nothing and your batteries die
when you listen to yourself and realize
you cant scream because for you there
is no end to the story
as long as you have your head phones on
your invincible

turn down the music
and for once look around
your all alone and you dont care
because your invincible
with those head phones on
you cant remember anything
and its alright
everything is shut out
your farther away
weve grown apart and
now your going into your place
farther away than you should be

That's tight bro. I'm still workin' on the remix, I'll keep you updated on that.