Music theory

harmonic set of three or more notes

succession of notes organized according to a model in ascending or descending order within an octave

study of the theoretical aspects of music and its notation

Tonality is the arrangement of pitches and/or chords of a musical work in a hierarchy of perceived relations, stabilities, attractions, and directionality.

sound with a typical pitch; steady periodic sound; characterized by its duration, pitch, intensity (or loudness), and timbre (or quality)

music in which some element of the composition is left to chance, and/or some primary element of a composed work's realization is left to the determination of its performer(s)

specification of beats in a musical bar or measure

way in which tempo, melody, and harmony are combined in a musical composition

instrumental combination of a composition

thumb|A bell

technique of using algorithms to create music

anonymous 9th century treatise on music

approach to music education

essay by Michael Praetorius

the musical technique of lengthening or widening of rhythm or interval

thumb|300px|Extract from Diego Ortiz's El Primo Libro ... Nel qual si tratta delle Glose depicting rhythm and generic intervals. Observe the diminution (i.e. division) process suggested by the composer, in reference to the rhythmic figures in the upper and lower musical parts. thumb|400px|A realization of the bottom line of the above Diego Ortiz extract in modern notation, completed with an arbitrarily chosen clef and a time signature.

learning theory that specifies how students learn music based on behavioral and cognitive psychology

A tonary is a liturgical book in the Western Christian Church which lists by incipit various items of Gregorian chant according to the Gregorian mode (tonus) of their melodies within the eight-mode system. Tonaries often include Office antiphons, the mode of which determines the recitation formula for the accompanying text (the psalm tone if the antiphon is sung with a psalm, or canticle tone if the antiphon is sung with a canticle), but a tonary may also or instead list responsories or Mass chants not associated with formulaic recitation. Although some tonaries are stand-alone works, they wer

emotional effect in music

book by Hector Berlioz

passage of notes played in reverse

thumb|right|320px|Antonio Zucchi, Apollo and the Muses, 1767. Melomania is the intense attachment to music experienced by a music lover. Depending on the person, it can lead to exaggerated dependence. This music lover is passionate about music, and it is generally the aspect of their life they are most passionate about.

psychological relationship between human affect and music

type of melody or melodic fragment

thumb|right|500px|A simple partimento with figures to teach beginners. (Fenaroli Partimento No. 1, Book 1, Gj1301) thumb|right|500px| A partimento fugue for more advanced students. As students progressed, partimenti became unfigured. (Fenaroli Partimento Fugue 8, Book 5, Gj1418)

maximally even rhythm

ninth-century music treatise formerly attributed to Hucbald

thumb|right|500px|A modern rendering of the Tonnetz. The A minor Triad (music)|triad is in dark blue, and the C major triad is in dark red. Interpreted as a torus, the Tonnetz has 12 nodes (pitches) and 24 triangles (triads).