You can separate commercial rights from copyrights. You can see this in anyone who finds a difference between "Hey, listen to this mp3 of Rihanna's We Found Lo

You can separate commercial rights from copyrights. You can see this in anyone who finds a difference between "Hey, listen to this mp3 of Rihanna's We Found Love", "Hey, buy this unofficial mp3 copy of Rihanna's We Found Love", and "Hey, listen to this mp3 of grellas' We Found Love"