There are those who produce signals – sounds or noises – and there are those who receive or do not receive these signals. The criterion in this might be the tuning fork principle: something resonates or does not.
In music those who produce the sounds or noises we call the composers/musicians but they do not produce the sound or noises by themselves or out of themselves, they are connected with something that enables them to do what they do.
Those that receive the sounds and noises must be on the same frequency although they are not aware of this but they are suprised to find out as the tuning fork does its work.
So one person can produce/create music by connection and another can resonate just by being on the same frequency whilst both do not really know what is happening.
Does that simplicity not make music a mystery?