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Key pattern is the generic term for an interlocking geometric motif made from straight lines or bars that intersect to form rectilinear spiral shapes. [ 1 ] [ 2 ] [ 3 ] According to Allen and Anderson, the negative space between the lines or bars of a key pattern “resemb[es] the L- or T-shaped slots in an ordinary key to allow it to pass the ...
Key patterns are generated through cross-rhythm. [13] They typically consist of 12 or 16 pulses, and have a bipartite structure, which evenly divides the pattern into two rhythmically opposed cells of 6 or 8 pulses each. [14] The key pattern defines the musical period; the first cell is antecedent, and the second is consequent.
Spirals, step patterns, and key patterns are dominant motifs in Celtic art before the Christian influence on the Celts, which began around 450. These designs found their way into early Christian manuscripts and artwork with the addition of depictions from life, such as animals , plants and even humans .
The standard bell is the key pattern used in bembé and so with compositions based on triple-pulse rhythms, it is the seven-stroke bell, rather than the five-stroke clave that is the most familiar to jazz musicians. Consequently, some North American musicians refer to the triple-pulse standard pattern as "6 8 clave". [44] [45]
The meander is a fundamental design motif in regions far from a Hellenic orbit: labyrinthine meanders ("thunder" pattern [3]) appear in bands and as infill on Shang bronzes (c. 1600 BC – c. 1045 BC), and many traditional buildings in and around China still bear geometric designs almost identical to meanders.
Also known as a fret or a key pattern. Metope In a Doric entablature, the space between triglyphs along the frieze. [62] These may be ornamented or plain, and may be square or rectangular. [63] Mihrab In Islamic architecture, a semicircular niche in the wall of a mosque that indicates the direction of prayer. Minaret
A motif may be repeated in a pattern or design, often many times, or may just occur once in a work. [ 1 ] A motif may be an element in the iconography of a particular subject or type of subject that is seen in other works, or may form the main subject, as the Master of Animals motif in ancient art typically does.
Baroque opera arias and a considerable number of baroque sacred music arias was dominated by the Da capo aria which were in the ABA form. A frequent model of the form began with a long A section in a major key, a short B section in a relative minor key mildly developing the thematic material of the A section and then a repetition of the A section. [4]