The reality is that one can obtain copyright for the notatable parts of muic,this does include the rhythmic quaities of a pitch bsed piece,but what is written is melodic. One can't copyright a groove,a texture or a timbre .Essentially what is conventionally taught as music ,and what is legally ownable is pitch sequences. Certaonly the rhythmic subtleties are essential to expression. Some of the lack of rhythmic sophistication has to do with the history of European churches trying to suppress and control sexuality. This is also why musics from the New World ;U.S. ,S. American ,Carribean with strong African rhythm elements are so influential.
If
we take eternity to mean not infinite temporal duration but
timelessness, then eternal life belongs to those who live in the
present.