As Geminiani explains it, “The sound ought to commence softly, and should swell out in a gradual fashion to about half its value, then it should diminish to the end. The movement of the bow should continue without interruption.”
It happens thus, that by a refinement of expression, which became a mannerism of the Mannheim school, but which also became a source of powerful contrast with the Beethovenians, the swelling stopped short of its aim, and was followed instead by a sudden piano, as in the following example from the Trio Sonatas of Geminiani.
It is more than probable that the virtuoso players of Handel’s orchestra also used this means of expression,[401] though we need not assume that Handel used them as abundantly as Geminiani or as the Mannheim players, whose taste had become doubtless a little affected and exaggerated. But what is certain is that with him, as with Geminiani, and indeed with all the great artists of his time, especially with the Italians and their followers, music was a real discourse, and ought to be rendered with inflections as free and as varied as natural speech.[402]
How was it possible to realise all the suppleness and subtleties of elocution on the orchestra? To understand this it is necessary to examine the disposition and placing of the orchestra of that time. It was not, as with us, centralised under the control of a single conductor. Thus, as Seiffert tells us,[403] in Handel’s time it was the principle of decentralisation which ruled. The choruses had their leaders, who listened to the organ, from which they took their cue, and so sustained the voices. The orchestra was divided into three sections, after the Italian method. Firstly, the Concertino, comprising a first and a second violin, and a solo violoncello; secondly, the Concerto Grosso, comprising the instrumental choir; thirdly, the Ripienists strengthening the Grosso.[404]
A picture in the British Museum, representing Handel in the midst of his musicians, depicts the composer seated at the clavier (a cembalo with two keyboards, of which the lid is raised). He is surrounded by the violoncellist (placed at his right-hand side), two violins and two flutes, which are placed just before him, under his eye. The solo singers are also near him, on his left, quite close to the clavecin. The rest of the instrumentalists are behind him, out of his sight. Thus his directions and his glances would control the Concertino, who would transmit in their turn the chief conductor’s wishes to the Concerto Grosso, and they in their turn to the Ripienists. In place of the quasi-military discipline of modern orchestras, controlled under the baton of a chief conductor, the different bodies of the Handelian orchestra governed one another with elasticity, and it was the incisive rhythm of the little Cembalo which put the whole mass into motion. Such a method avoided the mechanical stiffness of our performances. The danger was rather a certain wobbling without the powerful and infectious will-power of a chief such as Handel, and without the close sympathy of thought which was established between him and his capable sub-conductors of the Concertino and of the Grosso.
It is this elasticity which should be aimed at in the instrumental works of Handel when they are executed nowadays.[405]