and exuberance are of course expressed by forte and fortissimo effects (the crowd at a football game does not whisper its approval when its own team has made a touch-down), but the image of a mother singing a lullaby would demand altogether different dynamic treatment.
The crescendo is one of the most powerful means of expression that the composer has at his disposal—especially in writing for the modern orchestra, but there seems to be a good deal of misunderstanding on the part of amateur conductors and performers about the real meaning of the term. Crescendo does not mean forte; indeed Weingartner (op. cit., p. 6) quotes von Bülow as remarking that crescendo signifies piano,—meaning of course that a crescendo usually implies a soft beginning.
It should perhaps be noted at this point that there are two varieties of crescendo; one being produced by performing succeeding tones each more loudly than the one immediately preceding it; the other by prolonging the same tone and increasing its power gradually as it continues to sound. The first type is much commoner than the second, and is indeed the one kind of crescendo that is possible in piano playing; but the second variety can be secured in the case of an organ with swell box, the human voice, and in both string and wind orchestral instruments. Since some of the most beautiful musical effects may be produced by the use of this second type of crescendo, it should be employed very much more than it is in choral and orchestral music. The English conductor Coward takes the ground that the swell (a combination of crescendo and diminuendo) is the most powerful choral effect in existence.[1]
When the composer wishes to build up a really tremendous climax and sweep all before him by the intensity of the emotional excitement generated, he frequently
- ↑ Coward, Choral Technique and Expression, p. 112.
