section_path: Elements/Prosody/Rhythm
section_name: Rhythm
paragraph_text: Rhythm
  
  The methods for creating poetic rhythm vary across languages and between poetic traditions. Languages are often described as having timing set primarily by accents, syllables, or moras, depending on how rhythm is established, although a language can be influenced by multiple approaches. Japanese is a mora -timed language. Latin, Catalan, French, Leonese, Galician and Spanish are called syllable-timed languages. Stress-timed languages include English, Russian and, generally, German. Varying intonation also affects how rhythm is perceived. Languages can rely on either pitch or tone. Some languages with a pitch accent are Vedic Sanskrit or Ancient Greek. Tonal languages include Chinese, Vietnamese and most Subsaharan languages.
  
  Metrical rhythm generally involves precise arrangements of stresses or syllables into repeated patterns called feet within a line. In Modern English verse the pattern of stresses primarily differentiate feet, so rhythm based on meter in Modern English is most often founded on the pattern of stressed and unstressed syllables (alone or elided). In the classical languages, on the other hand, while the metrical units are similar, vowel length rather than stresses define the meter. Old English poetry used a metrical pattern involving varied numbers of syllables but a fixed number of strong stresses in each line.
  
  The chief device of ancient Hebrew Biblical poetry, including many of the psalms, was parallelism, a rhetorical structure in which successive lines reflected each other in grammatical structure, sound structure, notional content, or all three. Parallelism lent itself to antiphonal or call-and-response performance, which could also be reinforced by intonation. Thus, Biblical poetry relies much less on metrical feet to create rhythm, but instead creates rhythm based on much larger sound units of lines, phrases and sentences. Some classical poetry forms, such as Venpa of the Tamil language, had rigid grammars (to the point that they could be expressed as a context-free grammar) which ensured a rhythm.
  
  Classical Chinese poetics, based on the tone system of Middle Chinese, recognized two kinds of tones: the level (平 píng) tone and the oblique (仄 zè) tones, a category consisting of the rising (上 sháng) tone, the departing (去 qù) tone and the entering (入 rù) tone. Certain forms of poetry placed constraints on which syllables were required to be level and which oblique.
  
  The formal patterns of meter used in Modern English verse to create rhythm no longer dominate contemporary English poetry. In the case of free verse, rhythm is often organized based on looser units of cadence rather than a regular meter. Robinson Jeffers, Marianne Moore, and William Carlos Williams are three notable poets who reject the idea that regular accentual meter is critical to English poetry. Jeffers experimented with sprung rhythm as an alternative to accentual rhythm.