The timbre of the cornet lies somewhere between that of the horn and the trumpet, having the blaring, penetrating quality of the latter without its brilliant noble sonorousness. The great favour with which the cornet meets is due to the facility with which it speaks, to the little fatigue it causes, and to the simplicity of its mechanism. We must, however, regret from the point of view of art that its success has been so great, and that it has ended in usurping in brass bands the place of the bugles, the tone colour of which is infinitely preferable as a foundation for an ensemble composed entirely of brass instruments. Even the symphonic orchestra has not been secure from its intrusion, and the growing tendency in some orchestras, notably in France, to allow the cornet to supersede the trumpet, to the great detriment of tone colour, is to be deplored. The cornet used in a rich orchestral harmony is of value for completing the chords of trumpets, or to undertake diatonic and chromatic passages which on account of their rapidity cannot easily be fingered by trombones or horns. The technical possibilities of the instrument are very great, almost unrivalled in the brass wind:—notes sustained, crescendo or diminuendo; diatonic and chromatic scale and arpeggio passages; leaps, shakes, and in fact all kinds of musical figures in any key, can be played with great facility on the three-valved cornet. Double tonguing is also practicable, the articulation with the tongue of the syllables ti-ke for double, and of ti-ke-ti for triple time producing a striking staccato effect.
| Fig. 3.—B♭ Cornet with enharmonic valves (Besson & Co.). |
| Fig. 4.—B♭ Cornet with strictly conical bore throughout, Klussmann’s patent (Rudall, Carte & Co.). |
The cornet was evolved in Germany, at the beginning of the 19th century, from the post-horn, by the application of the newly invented pistons of Stoelzel and Bluemel patented in 1815. It was introduced into Great Britain and France about 1830. There were at first only two pistons—for a whole tone and for a half tone—from which there naturally resulted gaps in the chromatic scale of the instrument. The use of a combination of pistons (see [Bombardon] and [Valves]) fails to give acoustically correct intervals, because the length of tubing thus thrown open is not of the theoretical length required to produce the interval. A tube about 4 ft. long, such as that of the B♭ cornet, needs an additional length of about 3 in. to lower the pitch a semitone; but, if this cornet has already been lowered one tone to the key of A♭, the length of tube has increased some 6 in., and the 3-in. semitone piston no longer adds sufficient tubing to produce a semitone of correct intonation. To the performer falls the task of concealing the shortcomings of his instrument, and he therefore corrects the intonation by varying the lip tension. At first the cornet was supplied with a great many crooks for A, A♭, G, F, E, E♭ and D, but from the explanation now given, it will be readily understood that they were found unpractical for valve instruments, and all but the first two mentioned have been abandoned. The history of the cornet is a record of the endeavours of successive musical instrument makers to overcome this inherent defect in construction. The most ingenious and successful of these improvements are the following:—(1) The six-valve-independent system[18] of Adolphe Sax, designed about 1850, by which a separate valve was used for each position, thus obviating the necessity of using combinations of pistons. This theoretically perfect system unfortunately introduced great difficulties in practice, the valves being made ascending instead of descending, and each piston cutting off a definite length of wind-way from the open tube, instead of adding to it. The system was eventually abandoned. (2) The Besson Registre giving eight independent positions, afterwards modified as the (3) Besson compensating system transpositeur, patented in England in 1859, which was considered so successful that the idea was extensively used by other makers. (4) The Boosey automatic compensating piston, invented by D. J. Blaikley, and patented in 1878, a very ingenious device whereby when two or more pistons are used simultaneously the length of the air column is automatically adjusted to the theoretical length required to ensure correct intonation. (5) Victor Mahillon’s automatic regulating pistons (pistons régulateur automatique) produced about 1886, the result of independent efforts in the same direction as Blaikley, and equally ingenious and effectual.[19] Finally we have (6) more recently the Besson enharmonic valve system (fig. 3) with three pistons and six independent tuning slides which give the seven positions independently, thus realizing in a simple effectual manner all that Sax strove to accomplish with his six pistons. The enharmonic valves give all notes theoretically true; there are in addition separate means for adjusting each of the first six lengths, for although these lengths are theoretically correct there are always certain modifying conditions connected with brass instruments which render it essential to provide means for adjustment. All notes being true on this Besson cornet, they can be fingered to the greatest advantage for smoothness and rapidity. (7) Rudall, Carte & Co.’s cornet (fig. 4), with strictly conical bore (Klussmann’s patent) throughout the open tube and additional lengths from the mouthpiece to the bell, gives a perfect intonation and is at the same time easy to blow. There are no crooks to this cornet when constructed in B♭, but it may be instantaneously transposed into the key of A major by means of an undetachable slide guided by a piston rod.
(V. M.; K. S.)
[1] See Marin Mersenne, L’Harmonie universelle (Paris, 1636-1637), bk. v., pp. 273-274.
[2] See Eisel’s (Anon.) Musicus Αὐτοδίδακτος, oder der sich selbst informirende Musicus (Erfurt, 1738), p. 93 and table vi.
[3] Sebastian Virdung, Musica getutscht und auszgezogen (Basel, 1511).
[4] Michael Praetorius, Syntag. Music., vol. ii. De Organographia (Wolfenbüttel, 1618), pp. 25 and 41, pls. 8 and 13.