Shortly after we were born, there is a good possibility we were exposed to music. What kind of music would depend on where we were born; someone born in the swamps of Louisiana would be exposed to a different genre than someone born in metropolitan Chicago.
After we discovered we could wiggle our toes, we heard music, and a beat that we could wiggle our toes to; we were really on to something. Naturally, that was the best music in the world, it resonated our tiny souls.
Now that you're an Audiophile, you can recreate that same music in your listening room with such an astounding degree of realism, that when it contains "soul" (that's the component in music that causes your heart to palpitate, and it makes you feel good) it resonates with your soul.
This genre of music was determined a long time ago, and although it varies from person to person, the subject of conversation here; is the ability of one's rig to project that emotional component of the music I call "soul"; which by the way can be in any genre of music; it could be "hill billy" soul, in which case you would want to stomp your feet, instead of tapping your toes, and I'm sure there is another name for this component in "hill-billy" vernacular, but a rose by any other name is still a rose.
I contend that vinyl, or master tape, projects this intensely personal element of music better than any other source. As a matter of fact, the cartridge is the only component in the chain that resonates with your personal soul, and it should be chosen with great care, that is specifically for this purpose. For these reasons, the cartridge is the most important element in the chain that reproduces music.