All the things that human beings suffer from are how their environment treats them, and how the elements of their planet affects their mind and body - like radiation, cancer, and all.
Music is emotional, and you may catch a musician in a very unemotional mood or you may not be in the same frame of mind as the musician. So a critic will often say a musician is slipping.
If it is indeed impossible - or at least very difficult - to inhabit the consciousness of an animal, then in writing about animals there is a temptation to project upon them feelings and thoughts that may belong only to our own human mind and heart.
There are works of literature whose influence is strong but indirect because it is mediated through the whole of the culture rather than immediately through imitation. Wordsworth is the case that comes to mind.
If I try to understand what it means to be a Christian, I look at the two instructions that were given in the Bible that are paramount, and those are to love God with all your heart and mind, and to love your neighbor as yourself. That's it.
The calm mind allows one to connect with the inner self, the Soul, the very source of our being. That's where the music lives. That's where my music comes from.