How much the «short breath» of Grieg is due to the nature of his thematic material is a difficult question to answer. Folk-tunes, it is certain, are simple in structure, composed of short phrases expressing the naïve emotions of childlike minds. On the other hand, had they not fulfilled Grieg's personal needs, supplying the sort of atmosphere he was meant to breathe in, he could never have assimilated them as he has done. Perhaps a true account of the matter is that his nature is of such unusual simplicity and ingenuousness as to find in folk-melodies its natural utterance, and to feel in their primitive phrase-structure no limitation. Intellectually, the man is not more mature than the people. From whatever sources he might draw his germinal ideas, he would never combine them in complexer forms or larger patterns than he has found ready-made to his hand in the national song. There are, however, in Norwegian music peculiarities of a different sort that we can hardly conceive as proving other than hindrances in the formation of a wholesomely eclectic style--peculiarities which are all present full-fledged in so early a work of Grieg as the Piano Concerto, opus 16, written in 1868. At the very outset, in the descending octave passage, there are two melodic tricks that recur everywhere in Grieg--the fall from the seventh of the scale to the fifth, and from the third to the tonic. Both progressions, anomalous in classic music, are prominent features of the Northern folk-tunes. Then, in the first theme, assigned to the orchestra, there are to be noticed, besides these melodic steps, the bodily displacement of the phrase already described, carrying it from A minor into C major. In the second theme, as well as in the _cantabile_ piano passage that prepares the way for it, there is a rhythmic device characteristic of Grieg--the mixing in one measure of three notes to the beat with two notes to the beat, of which the prototype is to be found in the «Springtanz» of Norwegian peasants. Here also is the weak cadence, that is to say, the cadence with tonic chord coming on an unaccented beat. So much for melodic and rhythmic peculiarities; as a harmonist Grieg has methods equally persistent. His love of bare fifths, reiterated in the bass with boorish vigor, and his manner of harmonizing with descending chromatic sixths or thirds, both of which we remarked in opus 3, are illustrated in this Concerto; the first in the conclusion-theme of the first movement, and the second in measures fourteen to sixteen of the beautiful Adagio. Finally, he is devoted to the secondary sevenths, especially in harsh and daring sequence such as make up most of the Norwegian March, opus 54, No. 2. Mannerisms like these Grieg has, on the whole, in far larger measure than most composers. On almost any of his pages the student will have no difficulty in finding for himself instances of one or more of these mannerisms.