Run project:

npm run watch

RELEASE PROCESS

• increase version in package.json

• npm run build

• push to main

open example/index.html in browser

gabc notation:

https://gregorio-project.github.io/gabc/index.html

Common terms:

Gregorian chant - is a form of monophonic, unaccompanied vocal music that developed in the medieval period for use in the Catholic Church.

Pitch - attribute of sound that allows us to order sounds from low to high;

Clef - symbol placed at the beginning of a staff to indicate the pitch of the notes on the staff;

Syllable - unit of sound that is pronounced as a single, uninterrupted sequence of phonemes;

Neume - a symbol used in medieval and early music notation to represent one or more musical notes. There are many different types of neumes, each with its own shape and meaning. Some neumes indicate rising or falling melodic motion, while others indicate a repeating pattern or ornamentation.

Glyph - a graphical symbol that represents a character or symbol in written or printed communication.

Staff lines - the set of horizontal lines and spaces on which musical notation is written. (4 lines in early music notation and 5 in modern)

Ledger lines - are short, horizontal lines added above or below the staff in sheet music to extend the range of the staff.

Virga - is a symbol used to indicate a small upward flourish or a quick upward stroke of a note. The symbol consists of a small vertical line with a curved or diagonal stroke extending upwards from the top of the line.

Accidental - refers to a symbol or notation that is used to alter the pitch of a note from its normal, diatonic pitch. Accidental symbols include sharps (#), flats (b), and naturals (♮).

Episema (horizontal episema or a horizontal line) - symbol used to indicate a slight pause or emphasis on a particular note or group of notes. The symbol looks like a horizontal line placed above or below the notehead.

Mora - is a unit of sound that is used to measure syllabic weight or duration in a language. A mora is similar to a syllable, but it is more precise in terms of timing and weight.

Octave - is a musical interval between two pitches where the higher pitch has a frequency exactly double that of the lower pitch.

Ictus - refers to the moment of the conductor's beat, usually a downward movement of the hand or baton that marks the beginning of a measure in musical notation.

Inclinati (Inclinato) - used to indicate a slight emphasis or accent on a particular note or phrase, as if the music were leaning in a certain direction. In notation, the Inclinato is indicated by a small slanted line above or below the note, indicating that it should be played or sung with a subtle accent or inflection. The use of Inclinato can add nuance and expression to a musical performance, and is particularly common in Italian vocal music from the Baroque and Classical eras.

Porrectus - type of neume, which is a symbol used to represent a group of notes sung to a single syllable.

Podatus - A Podatus is a type of neume used in plainchant notation, which is a form of monophonic (single-voiced) sacred music that developed in the medieval period. The Podatus consists of two notes played in succession, with the first note at a higher pitch than the second. It is also sometimes called a "step." The Podatus is represented in notation by a diagonal line descending from left to right, with a dot or small stroke indicating the higher pitch of the first note. The Podatus is one of the most common and fundamental neumes in plainchant, and is found in many different forms and styles of chant. It is often used to decorate or ornament a syllable or word in the text being sung.

Liquescent - term used in medieval and Renaissance music to describe a type of vocal ornamentation in which a note is sung with a smooth and flowing transition from one pitch to another. Liquescent notes are often used in plainchant and other sacred vocal music of the medieval and Renaissance periods. They are used to decorate or embellish certain syllables or words in the text, and can add a sense of grace and fluidity to the melody.

Quilisma - is a type of ornamental neume, which means it was used to embellish or decorate a melody, rather than to represent a specific pitch or rhythm. The quilisma is a diamond-shaped symbol that is placed above a note in the notation. It is meant to be sung with a slight vibrato or trill, and is often used to ornament a syllable or word in the text being sung.

Drop cap - also known as an initial cap, is a large capital letter used at the beginning of a paragraph or section of text.

Custos - refers to a symbol used in medieval musical notation to indicate the pitch of the next note in the chant. The custos was usually written at the end of a line of music and showed the direction in which the melody would continue. It was shaped like a small letter "s" or "z" and was placed on the left-hand side of the last note of the line.