Cumulative song

A cumulative song is a song with a simple verse structure modified by progressive addition so that each verse is longer than the verse before. Cumulative songs are popular for group singing, in part because they require relatively little memorization of lyrics, and because remembering the previous verse to concatenate it to form the current verse can become a kind of game.

Typically, the lyrics take the form of a stanza of at least two lines. In each verse, the text of the first line introduces a new item, and the other line uses the words to begin a list which includes items from all the preceding verses. The item is typically a new phrase (simultaneously a group of words and a musical phrase) to a line in a previous stanza.

The two lines are often separated by refrains. Many cumulative songs also have a chorus.

One of the most well-known examples of a cumulative song is the Christmas song entitled The Twelve Days of Christmas, which uses a two-line stanza, where the second line is cumulative, as follows:

On the first day of Christmas, my true love sent to me
A partridge in a pear tree.

On the second day of Christmas my true love sent to me
Two turtle doves and a partridge in a pear tree.

On the third day of Christmas, my true love sent to me
Three french hens, two turtle doves and a partridge in a pear tree.

and so on until

On the twelfth day of Christmas, my true love sent to me
Twelve drummers drumming, eleven pipers piping, ten lords a-leaping, nine ladies dancing, eight maids a-milking, seven swans a-swimming, six geese a-laying, five gold rings, four calling birds, three french hens, two turtle doves and a partridge in a pear tree.

The first gift (the partridge) is always sung to a "coda melody" phrase. For the first four verses, the additional gifts are all sung to a repeated standard melodic phrase. In the fifth verse, a different melody, with a change of tempo, is introduced for the five gold rings; and from this point on the first five gifts are always sung to a set of varied melodic phrases (with the partridge retaining its original coda phrase). Thence forward, the wording of each new gift is sung to the original standard melodic phrase before returning to the five gold rings.

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