So, what would you do if; A track identical to yours appeared on Radio 1, being played 4 times an hour, the Katy Perry Remix for instance. Would you just go, oh well? Or would you say; Oi, that's mine bitch, give me my royalties. If it's copyrighted, you can. If it's not, you lose out on £8mil.. Copyright it dude. It's worth the price of a CD, a letter and a stamp. Also note man, your stuff IS good enough. Take this from me, and I did admissions at a record company. (Suppose that actually doesn't mean much in todays musical climate. )