capacious moment, the reintroduction of the Minuett in a bolder key than before, to whose grave, deliberate measure the more elegant company begins to move in antique, solemn steps; then presently, commingling with the Minuett, but not disturbing it, two other tunes, to other rhythms, namely, a rustic contra-dance, and a most rapid waltz, inspiring the heels of the peasants; the droll attempts of Leporello to make Masetto dance, while his master has bespoken the arm and ear of the pretty bride, to win whom he has planned this whole array; the indignant observation of this game by Donna Anna, with difficulty moderated until due time by her companions; the piercing shriek of the music as Don Juan whirls Zerlina away out of the dance; the cry for aid; the general rush to the door whence the sounds proceed, and when it is broken in, the grotesque brief diversion of the Don dragging Leporello by the ear, and trying to fasten his own crime on him; the incredulous and accusing phrase, in which the voices of the trio, now unmasked, confront him successively in _Canon_ style; and the out-bursting of the general tempest of wrath upon the exposed deceiver, heightened, too, by the sweeping wind and hissing lightnings of an actual physical storm that is supposed to be passing without. The strength of the accusing chorus is splendidly terrific, and like the rush of a whirlwind, where all the voices in unison swiftly traverse up and down several times the first five notes of the scale. But he of the dauntless will and the magnetic eye, with one sword awes back and penetrates the maddened mob, escaping with a loud laugh of defiance. Our very slight and hasty sketch has already grown to considerable length, and yet we have examined only one act of the three, into which “Don Giovani” is usually divided in the performance. One act was enough to show (if _that_ were all our object) how this opera wells up as from an exhaustless fountain of musical ideas, all of which are of the inspired, enduring quality; we have listened to materials enough already for some twenty of the fashionable operas of our day. We must glance more hastily at the remainder.