Because Music is defined different by different people. Music has different meaning in every personâs life. We know, to many of the musicians music is their life. They love music than everything in their life. They eat, breathe, and live music. Music is their passion. For many others, music is a hobby, a pastime. Music is something that arouses interest and is enjoyable. so far it seems to me that the question âWhat is music?â which does not have a fixed meaning, since though music can be defined in mechanistic terms as just feelings that are detected by the organ of Corti and assimilated by the brainâs cortex into what we hear, but that is not complete.