
Originally Posted by
Cunamara
Hi, Joel-
Well, I will take a stab at it. I've been pondering for several days how to do that, conscious of the idea that "if you can't explain it in plain language, you don't understand it yourself."
So let's start with the basic nerve cell, call the neuron. A neuron by itself can't do much, but when it is connected to other neurons it can send and receive signals. Neurons linked together form neural networks just like the electrical components in your guitar or amplifier are also a kind of network. The preamp is one network, the power amp is another network, the pedals in your signal chain are each networks, the electronics in your guitar are a network. Linked together, you have a way to pluck a string on the guitar and that signal is amplified into sound other people can hear. Think of each of those components as a neural network. Brains are made up of many small neural networks that process some bit of information and pass it on to another small network, which then processes and adds to that information and passes it on to yet another network until the end result is achieved- for example, moving a finger. A bunch of those together allow us to tap our feet, feel rhythm and time passing, form thoughts, sing melodies, etc.
Different areas in the brain do different things and then have to coordinate the things they do with the things other parts of the brain do. The parts of our brain that processes music, for example, are not the same parts of our brain that coordinate our hand movements. There are third, fourth, fifth, maybe more parts of the brain that mediate and connect those parts into the purposeful behavior of playing a guitar. The speed at which this can happen truly amazes me- think about McLaughlin or DeMeola or de Lucia blazing away.
Memory is not yet all that well understood. It seems clear that we have different networks providing different kinds of memory functioning- for example, visual memory, auditory memory, biographical memory, memory for impersonal facts and figures, movement memory, etc., may all develop from their own sets of neural networks. The information is encoded into the brain somewhere and somehow we are able to retrieve it when we need it. And those separate kinds of memories can be coordinated together such as remembering your mother's face, name, birthdate, the color of her hair and eyes, what kinds of clothing she wore, what kind of perfume she wore, how her voice sounded, catchphrases she used, etc. That seems like a single unitary memory but there are multiple memory systems at work producing that for you.
With music it's probably the same. When learning a melody or chord sequence I tend to find myself trying to remember it as a series of hand movements- so-called muscle memory. This does not work well as it often sounds mechanical and if asked to transpose that into a different key I can't do it. I think this is also what we hear when someone is "running scales" during a solo. If I can learn to remember the melody and use that as the guiding principle instead of the movements, my playing is smoother and more expressive. If I can remember the sounds of the chord movement/voice leading instead of the finger contortions, that too sounds more musical when I play it. If I can deeply learn the melody and chords to a song, I should be able to play it in any key or almost any key on request. I have never been very good at that, at all. Good jazz musicians can do this; they hear the music in their head and then can reproduce that with their hands. I think that when we are talking about "musical memory," that is the functioning we are talking about. When learning a scale or a melody, the standard old-timers' advice is to learn to play it in a bunch of different positions, in a bunch of different keys. The point of that is to break up the tendency towards relying on muscle memory and instead create auditory memory to which your movements can be coordinated.
As for whether or not someone's ability to do this is genetically inherited versus learned or picked up from the environment, I think the answer is yes. Not to sound too much like Yogi Berra taking the fork in the road. Some people appear to be simply unable to find rhythm or carry a tune, other people seem to do it nearly effortlessly. In order to have that functioning at a high-level, I think it is necessary to have at least some degree of genetic capacity combined with putting in the work. Without learning, which is the programming of the brain, developing those skills is I think not going to happen just on the basis of genetic inheritance. There are a few savants who have some very specific musical skills, such as being able to playback virtually any piece of music on hearing at once. I don't know what to make of outliers like that.
We know that some people have unique inherited abilities such as super-acute color perception, super-acute taste perception, etc. I don't think anyone has the inherited ability to play jazz without teaching, training and practice. I also think there are a lot of people who just simply never develop those abilities but could have, if they had been interested in it.
Track off new album release for anyone interested.
Today, 07:21 AM in Composition