The Sequence Veni, Sancte Spiritus
Author: Mrs. Myriam Van Lerberghe-Thibaut
originated from the pratice of creating lyrics on the iubilus (melism) of the Alleluia. Notker Balbulus
One should understand that the long series of notes without lyrics had to be learnt by heart as there were not yet any printed books. Notker got the idea to give each note its own syllable, which helped to remember the tunes. Long melisms were especially to be found in the Alleluia, where the 'a' was cheered almost infinitely.
The mnemonic aid became an independent poetical and musical form very soon, standing apart from the Alleluia: the Sequence. This chant is still sung directly after the Alleluia at some Solemnities. Thousands of Sequences have appeared during the Middle Ages.
In the XVIth century the council of Trent
In 1727 a fifth Sequence was added: Stabat Mater for Our Lady of the Seven Sorrows on September, 15.
The early classical Sequence is composed mainly of a series of double verses, preceded by a beginning verse.
The two lines of each double verse are sung on the same tune. So the musical form is:
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