As Devilmaster suggests Write the words to your song and the music if you have it the date and anything else pertinate to it and send a certified letter to yourself and mail it.When you receive the letter you have to sign for it so this will protect your song,but then I suggest you apply for a copyright and in England I have no ides what the procedure is buthere you have to go through WDC and it costs a few bucks and some rig ga ma ro but it then protects you for 95 years Louie Roy