The Irish musicians had various ‘_Styles_,’ three of which are very often mentioned in tales and other ancient Irish writings: of these, numerous specimens have come down to the present day. The style they called ‘Mirth-music’ (_Ganntree_) consisted of lively airs, which excited to cheerfulness, mirthfulness, and laughter. These are represented by our present dance tunes, such as jigs, reels, hornpipes, and other such spirited pieces, which are known so well in every part of Ireland. The ‘Sorrow-music’ (_Goltree_) was slow and sad, and was always sung on the occasion of a death. We have many airs belonging to this style, which are now commonly called _Keens_, i.e., laments, or dirges. The ‘Sleep-music’ (_Suantree_) was intended to produce sleep; and the tunes belonging to this style were plaintive and soothing. Such airs are now known as lullabies, or nurse-tunes, or cradle-songs, of which numerous examples are preserved in collections of Irish music. They were usually sung to put children to sleep. Though there are many tunes belonging to these three classes, they form only a small part of the great body of Irish music. Music--as already remarked--entered into many of the daily occupations of the people. There were special spinning-wheel songs, which the women sang, with words, in chorus or in dialogue, when employed in spinning. At milking-time the girls were in the habit of chanting a particular sort of air, in a low gentle voice. These Milking-songs were slow and plaintive, something like the nurse-tunes, and had the effect of soothing the cows and of making them submit more gently to be milked. This practice was common down to fifty or sixty years ago; and I well remember seeing cows grow restless when the song was interrupted, and become again quiet and placid when it was resumed. The same custom was common in the Highlands of Scotland. While ploughmen were at their work they whistled a sweet, slow, and sad strain, which had as powerful an effect in soothing the horses at their hard labour as the milking-songs had on the cows: and these Plough-whistles also were quite usual till about half a century ago. Special airs and songs were used during working time by smiths, by weavers, and by boatmen. There were, besides, hymn-tunes; and young people had simple airs for all sorts of games and sports. In most cases words suitable to the several occasions were sung with lullabies, laments, and occupation-tunes. Examples of all the preceding classes of melodies will be found in the collections of Irish airs by Bunting, Petrie, and Joyce. The Irish had numerous war-marches, which the pipers played at the head of the clansmen when marching to battle, and which inspired them with courage and dash for the fight. This custom is still kept up by the Scotch; and many fine battle-tunes are printed in Irish and Scotch collections of national music.