the importance of oh

oh, the word oh.
it can add so much to a simple sentance.
for instance.
lets say you're writing a play. the main character is in mortal agony. instead of having him say
"The pain!" which, while to the point, doesn't really bring your point across, by simply adding 'oh' it can become an agonised, desperate plea for relief.
"Oh! The pain!"
see what i mean?

when placed at the beging of a song and stretched out to a rediculous length it can make the whole experiance that much more exciting.
for example
"let's name the zones, the zones, the zones, lets name the zones of the open sea"
boring yes?
how about now?
Ohhhhhhhhhhhhhhhhhhhhhh! Let's name the zones, the zones, the zones, lets names the zones of the open seeeeeeeaaaaa!"
much more enjoyable.

but don't forget.
never write a drawn out oh with to many o's
cause that's not oh its ooh.