Online buying-selling of music copyrights

Cybrain

Hello everybody,

Being a newcomer to this field I still remain under dark on some issues and their functional limitations regarding music copyrights. In common sense we understand that copyright is the legal shield that safeguards one's creation, granting exclusive rights to the creator of the piece.

As for music, I wonder how effectively one artiste can retain the rights of his music piece as copying of themes under the veil of "inspiration" are so rampant nowadays. Under what circumstances can an artiste apply or move for violation of his/her music copyrights? Moreover, how safe is the online plaatform for buying and selling of music copyrights? when so many songs are available online, what why should one bother to go for the hassle of acquiring copyrights?