Examples of neumes may be seen here: "Basic & Liquescent Aquitanian Neumes" (archive from 10 June 2006, accessed 12 September 2014), [http://www.music.vt.edu/musicdictionary/appendix/notation/Neumes.html.
Clefs Neumes are written on a four-line
staff on the lines and spaces, unlike modern music notation, which uses five lines. Chant does not rely on any
absolute pitch or key; the clefs are only to establish the half and whole steps of the
hexachord: "ut", "re", "mi", "fa", "sol", "la". The clef bracketing a line indicates the location "ut" in the case of the C clef, or "fa" in the case of the F clef as shown: :
Single notes : The virga and punctum are of identical length. The virga is used to indicate a note within a group on which the main stress – the
ictus – falls. Scholars disagree on whether the bipunctum indicates a note twice as long, or whether the same note should be re-articulated. When this latter interpretation is favoured, it may be called a
repercussive neume.
Two notes : When two notes are one above the other, as in the podatus, the lower note is always sung first.
Three notes : The fact that the first two notes of the porrectus are connected as a diagonal rather than as individual notes seems to be a scribe's shortcut.
Compound neumes Several consecutive neumes can be grouped together for a single syllable, and some of these combinations have specific names. These are two examples: :
Other basic markings :
Interpretive marks The interpretation of these markings is the subject of great dispute among scholars. : Other interpretations of the quilisma: •
Shake or
trill—William Mahrt of
Stanford University supports this interpretation. This interpretation is also put into practice by the Washington Cappella Antiqua, under the direction of Patrick Jacobson. •
Quarter-tone or
accidental. The support for this interpretation lies in some early
digraphic manuscripts that combine chironomic neumes with letter-names. In places where other manuscripts have quilismas these digraphs often have a strange symbol in place of a letter, suggesting to some scholars the use of a pitch outside the
solmization system represented by the letter names. There are other uncommon neume shapes thought to indicate special types of vocal performance, though their precise meaning is a matter of debate: • The
trigon. The orthodox Solesme interpretation of this obscure three-note neume is a unison plus a third below, but there are other possibilities. It appears to have originated at St. Gall, though it is also widespread in French chant sources from the 10th and 11th centuries. It has been proposed that it may have a
microtonal meaning, but there is "an admitted lack of conclusiveness in the arguments in favor of notes smaller than a semitone." • The
distropha and
tristropha are groups of two and three
apostrophes, usually of the same pitch. They probably differed from normal repeated notes (virgae or puncta) in the way they were sung. Although there is some doubt on the matter, most modern writers accept Aurelian of Réôme's description of a staccato reiteration. • The
oriscus is a single-note neume, usually found added as an auxiliary note to another neume. The name may derive from either the Greek
horos (limit) or
ōriskos (little hill). Its intended manner of performance is not clear. Although a microtonal interpretation has been suggested, there is possible contradicting evidence in the Dijon tonary, Montpellier H. 159. • The
pressus is a compound neume, usually involving an initial neume followed by an oriscus and a punctum. The initial neume may be a virga (in which case the virga + oriscus may be together called a
virga strata), in which case the pressus indicates three notes; if the initial neume is a pes, then the compound indicates a four-note group. Just as with the oriscus itself, the interpretation is unsure. When chant came to be notated on a staff, the oriscus was normally represented as having the same pitch as the immediately preceding note. There are also
litterae significativae in many manuscripts, usually interpreted to indicate variations in tempo, e.g. c =
celeriter (fast), t =
tenete (hold) (an early form of the
tenuto), a =
auge (lengthen, as in a
tie). The Solesmes editions omit all such letters. ==Other functions==