In the future, I don't think musical artists will make songs. I think they will make models. Those models will contain all of the information needed for generative AI tools to quickly and accurately create music that reflects the sound and compositional qualities that define that artist. AI tools will create new original music spontaneously that is customized to the listener, perhaps taking into consideration the listener's mood and activities. Net net, the principal unit of economic value in the music industry will shift from being songs, to models.
It is a brave new world.