What shall we say? That we were delighted and surprised? All who were present know that, from their own feelings. We can only say, that we have never heard a voice like hers,--one that, with such ease, and with such absence of all effort, could range from the highest to the lowest notes. After singing the first song, she was called back, when she sat down to the piano, and commenced, "When Stars are in the Quiet Sky," we almost imagined, at first, that Geo. Baker, with his heavy bass voice, had broken forth somewhere in the vicinity. But what was our surprise to discover that those low, yet heavy and powerful notes, proceeded from the same person who just before had been singing with the highest, clearest notes of a woman. Thus it was throughout. It seemed as though to sing was as natural to her as to the bird; and she poured forth melody and music without being obliged to use those desperate and convulsive efforts that some do. She was received with the most rapturous applause, which in some of the songs broke forth at the end of every verse. This was especially the case when she sang "If a Body meet a Body," &c., when it seemed as though they could not sufficiently testify their pleasure. Professor Becht is a most correct and finished player on the piano; and we must say, that Mr. Schmittroth made more music than we ever heard before in scientific fiddling. Rochester, May 6, 1852. All the lovers of music in Rochester will be glad to learn that Miss Greenfield intends to give a concert in Corinthian Hall on Monday next. This gifted songstress has been having a series of very successful concerts in Ohio, and other States, and we predict for her a large audience on Monday. The magnificent quality of her voice, its great power, flexibility, and compass; her self-taught genius, energy, and perseverance, combine to render Miss Greenfield an object of uncommon interest to musicians. We have been spell-bound by the ravishing tones of Patti, Sontag, Malibran, and Grisi; we have heard the wondrous warblings of "_the Nightingale_;" and we have listened with delight to the sweet melodies of the fair daughter of Erin; but we hesitate not to assert that, with one year's tuition from the world-famed Emanuel Garcia, Miss Greenfield would not only compare favourably with any of the distinguished artists above named, but incomparably excel them all. We hoped, ere this, to hear of Miss Greenfield proceeding to England. Queen Victoria is a thorough judge of music, and a kind and generous patron to musicians,--Miss Greenfield's complexion would not bar her entrance to Buckingham Palace, nor would it shock the nerves of the most delicate lady of the court there. The _Black Swan should sail to Europe_. The Globe, Toronto, May 12-15th, 1852. Any one who went to the concert of Miss Greenfield on Thursday last, expecting to find that he had been deceived by the puffs of the American newspapers, must have found himself most agreeably disappointed.