I strongly suggest that you REGISTER your original songs. You have an 'automatic' copyright when recorded or when put into written form, but you need to protect your work. Registration sets a specific date for the work in case someone tries to rip off your masterpiece. This is invaluable if you sue for copyright infringement, etc.

There are several reliable sites which provide this service. If you don't mind the bureaucratic mish-mash, you can apply for registration with the US Gov.--however, this process can take several months for the Gov to get the docs back to you. It is pretty cheap: $35.00 for a bunch of lyrics, etc. You can check it out.

Fire, the wheel, and the I IV V -- foundations of civilization.