Sacred harp

Sacred Harp singing is a tradition of sacred choral music that originated in the American South of the United States. The name is derived from The Sacred Harp, a ubiquitous and historically important tunebook printed in shape notes. The work was first published in 1844 and has reappeared in multiple editions ever since. Sacred Harp music represents one branch of an older tradition of American music that developed over the period 1770 to 1820 from roots in New England, with a significant, related development under the influence of "revival" services around the 1840s. This music was included in, and became profoundly associated with, books using the shape note style of notation popular in America in the 18th and early 19th centuries.

Sacred Harp music is performed a cappella (voice only, without instruments) and originated as Protestant Christian music.

The name of the tradition comes from the title of the shape-note book from which the music is sung, The Sacred Harp. This book exists today in various editions, discussed below.

In shape-note music, notes are printed in special shapes that help the reader identify them on the musical scale. There are two prevalent systems, one using four shapes, and one using seven. In the four-shape system used in The Sacred Harp, each of the four shapes is connected to a particular syllable, fa, sol, la, or mi, and these syllables are employed in singing the notes, just as in the more familiar system that uses do, re, mi, etc. (see solfege). The four-shape system is able to cover the full musical scale because each syllable-shape combination other than mi is assigned to two distinct notes of the scale. For example, the C major scale would be notated and sung as follows:

The shape for fa is a triangle, sol an oval, la a rectangle, and mi a diamond.

In Sacred Harp singing, pitch is not absolute. The shapes and notes designate degrees of the scale, not particular pitches. Thus for a song in the key of C, fa designates C and F; for a song in G, fa designates G and C, and so on; hence it is called a moveable "do" system.

When Sacred Harp singers begin a song, they normally start by singing it with the appropriate syllable for each pitch, using the shapes to guide them. For those in the group not yet familiar with the song, the shapes help with the task of sight reading. The process of reading through the song with the shapes also helps fix the notes in memory. Once the shapes have been sung, the group then sings the verses of the song with their printed words.

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