“Music is how feelings sound like”
is the best quote I can think of which describes the influence of music on human beings. As feelings dominate and determine our lives generally, music helps us to understand those feelings.
You still need to be born with the skill of creating sounds to enable the feelings you want to generate in others, but it is through your feelings and emotions in expressing your music, that others will hear your message.
The creative process comes from your deepest inner personality and knowledge of yourself and that personality will help to shape the songs to perfection.