What benighted amateur was this who wanted to know the words of a beautiful duet; and is there much difference between such a one and the man who would look at the texture of a canvas to see what the painting on it was worth? Let it be admitted that as a rule no opera is intelligible without a libretto; but is a drama always intelligible without a play-bill? A libretto, for general use, need really be no larger than an ordinary programme; and it would be a positive advantage if it contained merely a sketch of the plot with the subject, and perhaps the first line of all the principal songs. [Sidenote: IMITATIVE MUSIC.] Then the foolish amateur would not run the risk of having his attention diverted from the music by the words, and would be more likely to give himself up to the enjoyment of the opera in a rational and legitimate manner. Another advantage of keeping the words from the public would be, that composers, full of the grossest prose, but priding themselves on their fancy, would at last see the inutility as well as the pettiness of picking out one particular word in a line, and "illustrating" it: thus imitating a sound when their aim should be to depict a sentiment. Even the illustrious Purcell has sinned in this respect, and Meyerbeer, innumerable times, though always displaying remarkable ingenuity, and as much good taste as is compatible with an error against both taste and reason. It is a pity that great musicians should descend to such anti-poetical, and, indeed, nonsensical trivialities; but when inferior ones are unable to let a singer wish she were a bird, without imitating a bird's chirruping on the piccolo, or allude in the most distant manner to the trumpet's sound, without taking it as a hint to introduce a short flourish on that instrument, I cannot help thinking of those literal-minded pictorial illustrators who follow a precisely analogous process, and who, for example, in picturing the scene in which "Macbeth" exclaims--"Throw physic to the dogs," would represent a man throwing bottles of medicine to a pack of hounds. What a treat, by the way, it would be to hear a setting of Othello's farewell to war by a determined composer of imitative picturesque music! How "ear-piercing" would be his fifes! How "spirit-stirring" his drums.