In music, a mordent is an ornament indicating that the note is to be played with ''a single'' rapid alternation with the note above or below. Like trills, they can be chromatically modified by a small flat,

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accidental. The term entered English musical terminology at the beginning of the 19th century, from the German ''Mordent'' and its Italian etymon, ''mordente'', both used in the 18th century to describe this musical figure. The word ultimately is derived from the

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'' mordere'' (to bite). The ''mordent'' is thought of as a rapid single alternation between an indicated note, the note above (the ''upper mordent'') or below (the ''lower mordent'') and the indicated note again. The upper mordent is indicated by a short squiggle; the lower mordent is the same with a short vertical line through it: : As with the trill, the exact speed with which the mordent is performed will vary according to the

tempo In musical terminology, tempo ( Italian, 'time'; plural ''tempos'', or ''tempi'' from the Italian plural) is the speed or pace of a given piece. In classical music, tempo is typically indicated with an instruction at the start of a piece (ofte ...

of the piece, but at a moderate tempo the above might be executed as follows: : The precise meaning of ''mordent'' has changed over the years. In the

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, a ''mordent'' was a ''lower mordent'' and an ''upper mordent'' was a ''pralltriller'' or ''schneller''. In the 19th century, however, the name ''mordent'' was generally applied to what is now called the ''upper'' mordent, and the ''lower mordent'' became known as an ''inverted mordent''. In other languages the situation is different: for example in German ''Pralltriller'' and ''Mordent'' are still the ''upper'' and ''lower'' mordents respectively. This ornament in French, and sometimes in German, is spelled ''mordant''. Although mordents are now thought of as just a single alternation between notes, in the Baroque period it appears that a ''Mordent'' may have sometimes been executed with more than one alternation between the indicated note and the note below, making it a sort of inverted trill. Also, mordents of all sorts might typically, in some periods, begin with an extra ''unessential note'' (the lesser, added note), rather than with the ''principal note'' as shown in the examples here. The same applies to trills, which in Baroque and Classical times would typically begin with the added, upper note. Practice,

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, and

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vary widely for all of these ornaments, and this article as a whole addresses an approximate nineteenth-century standard. The slide can be written using a symbol similar to that of the mordent, but placed to the left of the principal note, rather than above it.

See also

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Further reading