You can put your song in his fan site
Is there anyway i can contact bruno mars? Ive written some songs for him to sing! Apparantly theyre really good! How can he see them)?
You can try contacting him via his Myspace or Twitter pages.
If you believe in them don't give them away to easily, for someone else to cash in,
Ok um... Sometimes he does live chats and visits radio stations so you could try him there. I've met him, and he's really awesome. But the only way I did that, was a meet & greet at one of his concerts. You can give him thngs, but not directly to him. You give whatever you have to the security gaurd and he gets it afterwards. You could always try the fan club, his twitter, of even his facebook. Hope I helped! :)