After a brief but majestic instrumental introduction, the voices enter upon the "Requiem,"--a beautiful and solemn strain. The movement is built upon three melodies set to the words, "Requiem aeternam," "Tu decet Hymnus," and the "Kyrie," the accompaniment of which is very descriptive and characteristic. The "Kyrie" is specially impressive, the chant of the sopranos being answered by the tenors and basses in unison, and the whole closing with a dirge-like movement by the orchestra. The "Dies Irae" is the most spirited as well as impressive number of the work. It is intensely dramatic in its effects, indeed it might be called theatrical. Berlioz seems to have fairly exhausted the resources of instruments to produce the feeling of awful sublimity and overwhelming power, even to the verge of the most daring eccentricity and, as one prominent critic expressed it, "terrible cataclysms." The first part of the "Dies Irae" will always be remarkable for the orchestral arrangement. After the climax of the motive, "Quantus tremor est futurus," there is a pause which is significant by its very silence; it is the hush before the storm. Suddenly from either angle of the stage or hall, in addition to the principal orchestra in front, four smaller bands of trombones, trumpets, and tubas crash in with overwhelming power in the announcement of the terrors of the day of judgment. The effect is like that of peal upon peal of thunder. At its culmination the bass voices enter in unison upon the words, "Tuba mirum," in the midst of another orchestral storm, which is still further heightened by an unusual number of kettledrums. From the beginning to the close, this part of the "Dies Irae" is simply cyclopean; words cannot describe its overwhelming power. It is a relief when the storm has passed over, and we come to the next verse ("Quid sum miser"), for the basses and tenors, though mostly for the first tenors. It is a breathing spell of quiet delight. It is given in the softest of tone, and is marked in the score to be sung with "an expression of humility and awe." It leads to the andante number ("Rex tremendae majestatis"), which is sung fortissimo throughout, and accompanied with another tremendous outburst of harmonious thunder in crashing chords, which continues up to the last eight bars, when the voices drop suddenly from the furious fortissimo to an almost inaudible pianissimo on the words "Salve me." The next verse ("Quaerens me") is an unaccompanied six-part chorus in imitative style, of very close harmony. The "Dies Irae" ends with the "Lachrymosa," the longest and most interesting number in the work. It is thoroughly melodic, and is peculiarly strengthened by a pathetic and sentimental accompaniment, which, taken in connection with the choral part against which it is set, presents an almost inexhaustible variety of rhythms and an originality of technical effects which are astonishing. Its general character is broad and solemn, and it closes