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.