Music. It has the ability to be delivered with great depth and structure, by those who are proficient in thier craft. Chord structure, the blending of chords, can all play such a wonderful part in the creation of music, and not just the traditional F to C back to A, but those who can richly take chords and work magic with them.
The balance of a good rhythm section, and everyone plays their part in the fabrication of a great piece of art. There are those who have the capacity to transform music into a wonderful picture thru sound. It doesn't have to be loud or brash, but can be as subtle as one trumpet.
I think of Chris Botti, he was playing " My Funny Valentine " on a popular talk show one afternoon, and hearing him softly, as if making love to his instument, playing that trumpet, with the sensuous soothing energy that was in his soul, he was able to take even my breath away.
Music is best, when it's delivered thru your soul. There are those who now how to play, and then there are those who are as if a channel, to some power within themselves that brings about an energy in their music, that goes unmatched. Anyone who's a fan of Stevie Ray Vaughn, the blues and the music that comes flooding thru is instrument, knows what it means to have ones instrument become one with the musician. Some folks play but there are those who live.....
Training in the mere basics is a must for most musicians. There's a whole host of things that will come up missing when one doesn't have the basics, structure, music theory, and the like incorporated into thier musicianship. It's not just about sound, and notes, but involves math and numbers. If you miss the basics you will come up short.
It can be likened to two people going on a journey of 10,000 miles, one has a map as a guide, the other is using satellite navigation, you both get to where your going, the one using the satellite GPS systems, however, usually gets there with a lot more ease and understanding, so to the one who has a better than basic understanding of music and all the other related principles, will usually have a better chance at becoming a great musician.