The Norwegian folk-songs, spring dances, hallings, and wedding marches, have been well characterized as the outpourings of the inner lives of the common people, the expression of their dauntless energy, their struggles and aspirations. The folk-song of Norway, more than in any other land, embodies the character and expresses the tendencies of Viking life, ancient and modern. It bears the unmistakable marks of weal and woe of Norse life, the strongly marked and regularly introduced rythms of the developed and developing national character. And while an undercurrent of melancholy runs through most of it, it is, after all, the faithful interpreter of the lives of isolated and solitary occupants of fjords, fjelds, and dalen. The folk-songs of Norway are singularly typical of the country and its inhabitants. Some "seem to take us into the dense forest among mocking echoes from, the life outside; others show us the trolls tobogganing down the highest peaks of Norway; in some we feel human souls hovering over reefs; in others, memories of the old sun-lit land flit before us; but in none do we meet with sentimentalism, despondency, or disconsolateness." But with their weird and minor strains, and their odd jumps from low tones to high, on first acquaintance they strike the hearer as strange and elusive. Some of the epic songs, as Telemarken, are of great antiquity. But it was not until the last century that Norse tone artists discovered the wealth that had long been cherished by the peasants of the fjords and mountain valleys. Lindeman (1812-1887) was the first to recognize the musical significance of Norwegian folk-songs. He collected many hundred national ballads, hymns and dances, and called attention to their richness and variety as thematic material for a school of national music. In Lindeman's collection will be found songs which tell of the heroic exploits of old Norse vikings, kings, and earls of the heathen days of Thor and Odin, together with lyrics, deep and ardent, which sing of the loves, the joys, and the sorrows of the humbler Christian folks. The Hardanger violin, the lur and the langeleik have played a leading role in the development of Norwegian folk-songs and dances. The Hardanger instrument is more arched than the ordinary violin; there are four strings over the finger-board and four underneath, the latter of fine steel wire, acting as sympathetic strings. The men of the Hardanger fjord have long been distinguished for the workmanship and tonal qualities of their violins, and with them the peasants have improvised the rich and varied impressions of nature which we find embodied in folk-songs. The lur is a long wooden instrument, of the trumpet order, and is usually made of birch bark. It is much used in the mountains. The langeleik, or Norwegian harp, is a long, narrow, box-like stringed instrument, something of the character of the ancient zither. It has seven strings and sound holes, but its tone is weak and monotonous.