Right ok so now we come to the crux of it. With song copyright, for example, the gold standard has been 'is the melody the same'. How do you define a voice sp

Right ok so now we come to the crux of it. With song copyright, for example, the gold standard has been 'is the melody the same'. How do you define a voice specifically enough to copyright? What if some dude just happens to sound like Drake, because he won the punnet square of larynxes? Is his work now a copyright violation? What if he sounds like Drake when he puts on the Drake filter? Did the Drake filter violate copyright? Does his voice violate copyright only when filtered? The people deciding these questions are not philosophers of sound. They're lawyers and industry hacks. It's going to get messy.