Why We Love Music

by Carl E. Seashore

When the director of the professional symphony orchestra faces a group of temperamentally hardened performers in rehearsal it is war to the finish—victory or defeat. Recall some characteristic historical instances of artistic strategy in such a situation.

Chapter VI
MUSICAL INHERITANCE

The whole problem of mental inheritance is in the air, both in the sense that it is current and in the sense that it is relatively intangible. The struggle is best illustrated in the current approaches to the problem of inheritance of intelligence. In this the geneticist has not got far from base, but much has been learned in regard to the nature of the issues involved. In the field of music the geneticist has approached the subject experimentally without understanding the musical life; and the musician has approached the matter practically without being a competent experimenter. The psychologist has certainly not done his duty in clarifying the issues. The most pressing need at the present time is for such clarification. This can not be the work of one man or one generation, but must be achieved through co-operation of both sides in order to clear the way for valid experimentation.

In order to indicate the character of the problem we are now facing, I shall first venture to state some fundamental assumptions upon which probably all competent investigators agree and, second, venture a little way in the direction of identifying concepts of musical life which can be dealt with experimentally.

ESSENTIAL PREMISES

The mechanism of heredity lies in a single germ cell carrying the character-determining chromosomes which consist of organized chains of genes. In the character and organization of these genes in the fertilized cell we find the complete "blueprint" for the future individual in so far as it is to be determined by heredity. In the twenty-four pairs of chromosomes in the fertilized human germ cell we find the long and diversified heritage of each parent represented through the union of the sperm and the ovum. The selection and the organization of the genes in these chromosomes adequately represent what the future individual can be.

This genetic constitution is modified by the cytoplasm, the supporting part of the cell which is its first environment, and further by the entire embryonic environment. Any changes that take place after the launching of this cell, whether before or after birth, are regarded as environmental. In the embryonic life, this germinating cell develops by processes of cell division and specialization into the complete human organism ready to function more or less immediately after birth. This heritage has fabulous resources in the form of possible facilities for future development. As nature was prolific in the storing and transmission of countless hereditary characters in the genetic constitution, so the equipment of the child at birth is astonishingly prolific in the provision it makes for diversified development of the individual. Development from this stage on must, therefore, of necessity take place through a process of selection and specialization in which certain characters are given right of way and many are subordinated or inhibited by conflicting interests, but the great mass remain relatively latent or dormant. We may assume that superior musical talent is determined in large part by superior musical heredity, and that inferior musical talent or lack of talent may be determined in large part by a correspondingly defective heredity.

The science of heredity in the strictest sense focuses upon the study of the identification and organization of the genes in relation to the determination of characters which shall appear in the genetic constitution and determine future structures and functions of the individual. When the geneticist deals with specific anatomical structures, this relationship is traceable with comparative ease; but when he comes to deal with more or less complicated physiological or mental functions, the tracing of this relationship becomes rather baffling on account of the complexity of the final product.

Turning then to the issues involved in the interpretation of musical inheritance, we must face certain theoretical assumptions. One of them is that a scientific study of musical heredity cannot be pursued on the assumption that mind and body are two distinct entities, each inherited independently. Nor can we hold the old doctrine of psychophysical parallelism. All human genetics proceeds on the assumption that the human individual is one psychophysical organism. Our musical experience, observation and measurement will therefore represent views from the mental side; our organic studies may be views of the same things from the physical side.

Furthermore, musicality is not one specific human trait but an infinite hierarchy of traits running through the entire gamut of the psychophysical musical organism. To make any progress whatever, the scientist must make the supreme sacrifice of attempting to deal only with specific isolable factors apparently small and remote in themselves. The situation is analogous to that of purely physical features. It is generally admitted that the structure of the physical organism is heritable. But when we show that the color of the eyes of the fruit fly is heritable and that this inheritance takes place in a very complicated way, as has been adequately shown, we have simply identified parts of the structure and function of the genes in one specific feature in the vastly complex physical organism, however fundamental and characteristic this particular feature may be. This analogy applies in principle to the genetic study of the musical life. The crux of the difficulty lies in the identification of heritable factors.