section_path: Traditional folk music/Subject matter
section_name: Subject matter
paragraph_text: Subject matter
  
  Traditional folk music often includes sung words, although folk instrumental music occurs commonly in dance music traditions. Narrative verse looms large in the traditional folk music of many cultures. This encompasses such forms as traditional epic poetry, much of which was meant originally for oral performance, sometimes accompanied by instruments. Many epic poems of various cultures were pieced together from shorter pieces of traditional narrative verse, which explains their episodic structure, repetitive elements, and their frequent in medias res plot developments. Other forms of traditional narrative verse relate the outcomes of battles or lament tragedies or natural disasters.
  
  Sometimes, as in the triumphant Song of Deborah found in the Biblical Book of Judges, these songs celebrate victory. Laments for lost battles and wars, and the lives lost in them, are equally prominent in many traditions; these laments keep alive the cause for which the battle was fought. The narratives of traditional songs often also remember folk heroes such as John Henry or Robin Hood. Some traditional song narratives recall supernatural events or mysterious deaths.
  
  Hymns and other forms of religious music are often of traditional and unknown origin. Western musical notation was originally created to preserve the lines of Gregorian chant, which before its invention was taught as an oral tradition in monastic communities. Traditional songs such as Green grow the rushes, O present religious lore in a mnemonic form, as do Western Christmas carols and similar traditional songs.
  
  Work songs frequently feature call and response structures and are designed to enable the laborers who sing them to coordinate their efforts in accordance with the rhythms of the songs. They are frequently, but not invariably, composed. In the American armed forces, a lively oral tradition preserves jody calls ("Duckworth chants") which are sung while soldiers are on the march. Professional sailors made similar use of a large body of sea shanties. Love poetry, often of a tragic or regretful nature, prominently figures in many folk traditions. Nursery rhymes, children’s songs and nonsense verse used to amuse or quiet children also are frequent subjects of traditional songs.