It is by no means easy at the present day to discriminate between the musical reforms which Scarlatti actually invented himself, and those which tradition has somewhat generously attributed to him, but which were in fact the fortunate discoveries of earlier composers soon forgotten. Speaking in general terms, between Scarlatti and Monteverde a full century intervened, a century of such feverish musical activity as the world has scarcely ever seen equalled. Many gifted men took up the representative style where Monteverde left it, and small reforms were continually introduced. Scarlatti is credited with having made the aria more symmetrical by introducing the da capo after the middle part. He is also held by some to have invented, or greatly perfected, the Italian art of singing, and to have introduced running divisions for the display of the technique of the singers. In this point he is the forerunner of the later Italian composers. It is not at all easy to define the precise limitations between Scarlatti's work and that of the other composers, famous in their times, but now almost forgotten. Few of their works are now accessible, and the extracts in such collections as Gevaert's "Les Gloires de l'Italie" may have been edited with the additions required for modern ideas. But so far as I feel justified in drawing conclusions from the evidence accessible, the following are among the more important facts in the case:—
In Peri's "Eurydice" the aria occupies the smallest possible place. Giulio Caccini, his amateur co-worker, has an aria published in 1600 from "Nymphes des Ondes," called Fere selvagge che per monti errato, which is in the key of G, moderato, two periods, eight and six measures. The air by Peri, already mentioned, was sixteen measures, in sustained tones, symmetrical, and fulfilling the proper place of aria, which is that of emphasizing and idealizing an important moment in the drama. Gavaert's collection contains one by Marco Gagliano, a duet for two voices, Alma mea dove ten vai, which is in the key of D minor, and runs in thirds in the regulation Italian style. It is evident that here we have not to do with the representative style, but with a folks song more or less idealized. A cantata for solo voice, by Luigi Rossi, 1640, printed in Gevaert's collection, had the theme resumed after the middle part, in a manner quite equivalent to the da capo. This song also is notable for the amount of vocal running work which it contains (an interesting circumstance, considering the comparatively early period of its production after the discovery of the representative style); in this there are from eight to sixteen notes to a syllable, sixteenths in common time. Even the recitative in the dramatic part of this cantata has the pyrotechnic divisions. Cavalli, an aria from whose "Giasone" appears in Gevaert's collection (1649), seems to have held rather a meagre idea of the possibility of the aria. One of the more interesting of these early specimens is the aria or canzone, Farci pazzo da caterna, which is practically a duet with its own accompaniment, the voice answering the leading motive in the bass. It is somewhat defective in symmetry, but its general effect is admirable.
Scarlatti was far more richly endowed than these composers, both by nature and by art. In the Newberry Library, Chicago, there is one opera of Scarlatti's complete, "La Rosaura" (Edition of the German Society for Musical Research), which was probably produced between 1689 and 1692. As compared with the operas by Monteverde, the melody of this work is much more free. There is a largo prelude and aria of Climene in the second scene, with a string introduction, beautifully done. The violin part is very noble and effective. The second part of the aria is in A minor and other keys, ending in C minor, after which there is a da capo, bringing back the main aria. I know not whether this da capo was written by Scarlatti, or was an addition by the later editor; but inasmuch as the date of this opera so closely coincides with that of "Teodora" (1693), generally regarded as the first example of the da capo, this may well enough be an earlier case, unknown to the former writers. In the fifth scene there are some running divisions which are extended to considerable length, the word "spasso," for instance, having seven beats of common time, sixteenths. Throughout this work minor tonality preponderates very much, all the airs being in minor, and only one or two of the ritournelli being in major. Rosaura has a good air in the second act, and there is a remarkably fine piece of work for violin solo, lute, and 'cello, the cembale being silent.
M. Fétis says that in "Il Cadute de' Decemviri," played in 1705, "All the airs have a sentiment corresponding with the words, and a taking originality. Many have a solo violin with two other violin parts. In the second act an air of touching expression is accompanied by violin solo, with obbligati 'celli, and bass alone. The piece is full of strange harmonies and bold modulations, and is of exquisite beauty."
It was Scarlatti's good fortune to be active as a composer at the very time when the violin had received its finishing touches at the hands of the later Amati and Antonio Stradivarius. The first great violin virtuoso, Archangelo Corelli, had published his epoch-marking works during the last quarter of the seventeenth century. Scarlatti appears to have entered into the new musical world thus opened with ever fresh enjoyment and a rare intelligence. Fétis says that in "Laodicea e Berenice" (1701) he wrote an air with obbligato for violin and 'cello, the former having been intended for Corelli; but upon its proving impossible to secure Corelli, the air had to be given up because there was no violinist sufficiently skilled to play it.
In "Tigrane" (1715) the orchestra consisted of violins, violas, 'celli, basses, two horns, two oboes, which was an unprecedented number at that time. In "La Caduta de Decemviri" (1706) the air Ma, il ben mio che fa was accompanied by violins in four parts, with admirable effect. Obbligato solos are also frequent.
Scarlatti also made a mark as teacher of singing. By many he is regarded as the founder of the Italian art of singing. This may well enough have been the case. A great singer himself, a fine musician in every respect, and fully imbued with the concept of cantabile melody, as shown in the violin effects already mentioned as frequent in his operas, nothing could be more natural than that he should put the two ideas together, and seek to discover a method of training through which the human voice would be capable of similarly noble effects, with the added element of inherent vitality. According to tradition, he accomplished his task. At all events it was his pupil, Nicolo Porpora, who brought the art of sustained song to its highest perfection. Besides Porpora, who was perhaps his greatest pupil (and his eminent son, Domenico Scarlatti, who was great composer as well as virtuoso upon the clavier), the most celebrated of Scarlatti's pupils were Logroscino, Durante, and Hasse.
Considering the importance of the period when Scarlatti flourished, and his own prominence both in the eyes of his contemporaries and in the history of art, it is surprising that his biography has never been exhaustively written. Such a work, carried out in the spirit of Spitta's "Bach," would amount to a history of the creation and growth of Italian opera, and would be of vast interest.
