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Concept
Grain (musique)
Résumé
In music, texture is how the tempo, melodic, and harmonic materials are combined in a musical composition, determining the overall quality of the sound in a piece. The texture is often described in regard to the density, or thickness, and range, or width, between lowest and highest pitches, in relative terms as well as more specifically distinguished according to the number of voices, or parts, and the relationship between these voices (see Common types below). For example, a thick texture contains many 'layers' of instruments. One of these layers could be a string section or another brass. The thickness also is changed by the amount and the richness of the instruments playing the piece. The thickness varies from light to thick. A piece's texture may be changed by the number and character of parts playing at once, the timbre of the instruments or voices playing these parts and the harmony, tempo, and rhythms used. The types categorized by number and relationship of parts are analyzed and determined through the labeling of primary textural elements: primary melody (PM), secondary melody (SM), parallel supporting melody (PSM), static support (SS), harmonic support (HS), rhythmic support (RS), and harmonic and rhythmic support (HRS).
In musical terms, particularly in the fields of music history and music analysis, some common terms for different types of texture are:
Many classical pieces feature different kinds of texture within a short space of time. An example is the Scherzo from Schubert’s piano sonata in B major, D575. The first four bars are monophonic, with both hands performing the same melody an octave apart:
Bars 5–10 are homophonic, with all voices coinciding rhythmically:
Bars 11–20 are polyphonic. There are three parts, the top two moving in parallel (interval of a tenth). The lowest part imitates the rhythm of the upper two at the distance of three beats. The passage climaxes abruptly with a bar’s silence:
After the silence, the polyphonic texture expands from three to four independent parts moving simultaneously in bars 21–24.
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