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      H

      The letter H is used in German to denote the English note B, while B in German signifies the English B flat. In the use of the letters of a word to form a musical motif, the presence of H allows a complete musical version of the name BACH (B flat - A - C - B = German: B - A - C - H), used by various composers, including Liszt. The Russian composer Dmitry Shostakovich uses a musical cryptogram derived from the first letters of his name in German, DSCH, which becomes D - Es (= E flat) - C - H. This occurs in a number of his works as a kind of musical signature.
       
       

      Habanera (= Havanaise)

      The Habanera is a Cuban dance from Havana, later introduced to Spain. One of the most famous examples is found in Bizet’s Spanish opera Carmen, where Carmen herself sings a seductive Habanera. Ravel includes a Habanera in his Rapsodie espagnole and also wrote a Vocalise en forme de habanera, while Debussy makes use of the characteristic rhythm of the dance.
       
       

      Harmonic Rhythm

      The rhythm of the changes of harmony in time in a musical work.  Strong harmonic rhythm is marked by: 1) strong root motions, especially in root position;  2) by coincidence of harmonic changes with regular metrical dividing points, especially the downbeat of the measure;  3) by deemphasis of contrapuntal activity of the bass line;  4) and by relatively longer duration of the harmony.

      Weak harmonic rhythm is marked by:  1) weak root progressions;  2) deemphasis of root position;  3) the strength of contrapuntal motions added to the harmony;  4) weak rhythmic placement in the measure;  5) and relatively shorter duration.

      Harmonic rhythm does not itself depend on tempo any more than melodic rhythm does, but the combination of rapid tempo and rapid harmonic rhythm generally produces an effect of musical compression or intensity, whereas slow harmonic rhythm in slow tempo suggests breadth and freedom from tension.

      Schenker analysis characteristically emphasizes the relatively strong harmonic rhythm, over the larger time-span and considers the relatively weaker harmonic rhythm over the smaller tiem-span, a detail rather than a foundation-post of the overall harmonic structure.
       
       

      Harmonic Series

      In acoustics, a series of frequencies, all of which are integral multiples of a single frequency termed the fundamental.  The fundamental and its harmonics are numbered in order, the fundamental being the first harmonic.  Harmonics above the fundamental are sometimes termed overtones,  the second harmonic being the first overtone, etc.  The pitches represented by these frequencies, and thus the intervals formed among these pitches, are said to be acoustically pure.  In some measure, they correspond to the pitches and intervals employed in much Western music.  Most such music, however, requires the use of a tuning system in which relatively few intervals (always the octave and sometimes only the octave) are acoustically pure.
       
       

      Harmonica

      The Western harmonica or mouth-organ is an invention of the early 19th century, inspired by the ancient Chinese bamboo mouth-organ, the sheng. The 20th century chromatic harmonica, of which Larry Adler has been a leading exponent, has inspired a number of composers, including Vaughan Williams, who wrote a Romance for harmonica and orchestra.
       
       

      Harmoniemusik

      Harmoniemusik is music for wind band. In its more limited sense the term is used to signify music for wind bands or wind ensembles in the service of the nobility from the middle of the 18th century to the end of the third decade of the 19th century, and their popular counterparts. The Harmonie, the band itself, which varied in number from a duo to the often found sextet or octet or to a much larger number of players, had its counterpart in France and in England, as well as its successors among emigrants to the United States of America.
       
       

      Harmonium

      The harmonium, developed in the early 19th century from experiments in the last quarter of the century before, is a keyboard instrument that produces its sounds by means of air from bellows passing through free reeds, metal tongues that are made to vibrate. The instrument has a relatively small classical repertoire, its use either domestic or as a cheap substitute for the church organ. Dvor*ák wrote Bagatelles for two violins, cello and harmonium, and Schoenberg made some use of the harmonium in chamber arrangements of works of his own and in versions of two waltzes by Johann Strauss.
       
       

      Harmony

      Harmony describes the simultaneous sounding of two or more notes and the technique governing the construction of such chords and their arrangement in a succession of chords. Following the convention of writing music from left to right on a horizontal set of lines (staff or stave), harmony may be regarded as vertical, as opposed to counterpoint, which is horizontal. In other words harmony deals with chords, simultaneous sounds, and counterpoint with melody set against melody.
       
       

      Harp

      The harp is an instrument of great antiquity, represented from as early as 3000 B.C. in Sumeria. The form of the instrument has varied, but the modern double-action harp, a development of the early 19th century, is in general orchestral use. The strings are tuned in flats,starting from a bottom C flat, with seven pedals, each of which can change a given set of strings to a natural or a sharp. The C pedal, therefore, in its three positions, can make all the Cs on the instrument flat, natural or sharp. Other forms of harp survive. The Aeolian harp, with strings of the same length and pitch but of different thicknesses, was to be placed by an open window, its sounds produced by the wind blowing through the strings. Various forms of Celtic harp are still in use.
       
       

      Harpsichord

      The harpsichord is a keyboard instrument with strings running from front to back of its wing-shaped horizontal box and soundboard. Unlike the piano and the earlier clavichord with its hammers that strike the strings, the harpsichord has a mechanism by which the strings are plucked. The instrument seems to have existed in a simple form in the 14th century and assumed considerable importance from the early 16th until the fuller development of the pianoforte towards the end of the 18th century. Variations of dynamics on the harpsichord are possible through the use of stops that activate different lengths of string and by the use of a muting buff stop and of the two manuals often found on the instrument. In addition to its ubiquitous use in the music of the baroque period, the harpsichord has also been used by modern composers, since its revival at the end of the 19th century.
       
       

      Heldentenor

      The heroic tenor or Heldentenor is a tenor with a quality of voice suited to the heroic rôles of 19th century French Grand Opera and of the music-dramas of Wagner, as in the part of Tannhäuser in Wagner’s opera of that name.
       
       

      Hemiola

      1) a rhythm which , in its simplest form, contrasts a group of two equal note values against a group of three equal values occupying the same total time.  The contrast may be either simultaneous or successive.  The individual values of the contrasting groups stand in the proportion of 3:2.  In actual practice any specific value of either group may be replaced by two or more smaller values; or, two values of the group of three may be replaced by one larger value.  The term is used especially with reference to music of the 14th and 16th centuries.  In Baroque music, hemiola rhythms often occur in Courantes.  They are also to be found in works of such later composers as Beethoven, Brahms, Schumann, and Chopin.

      2) In an earlier sense, now obsolete, the term denoted a pair of notes whose vibration frequencies were related in the proportion of 3:2; such a ratio produces the interval of a perfect fifth.
       
       

      Heterophony

      The simultaneous performance of variant forms of one basic melody; the variants may involve added or omitted notes and rhythmic changes.  Heterophony is to be observed in some music of the Far East and may have been employed in ancient Greek and medieval Western music.
       
       

      Hexachord

      A collection of six pitches. Hexachords figure prominently in the history of solemnization and in twelve-tone theory.
       
       

      Hocket

      In polyphony of the 13th and 14th centuries, a stylistic device or a self-contained composition characterized by the distribution of a melodic line between two voices in such a way that as one sounds the other is silent.  As a device, it is first used in "conductus" and motets and later in Mass movements and certain of the vernacular, forms, above all the "caccia" and the "chace."  As a genre, the hocket is intimately related to the discant "clausula," its plainchant tenor arranged in modal patterns and ornamented by freely composed voices.  What distinguishes it is the overlapping of these voices so that, to quote Johannes de Grocheo, "they continually cut each other off."
       
       

      Homophony

      Music in which melodic interest is concentrated in one voice or part that is provided with a subordinate accompaniment, as distinct from polyphony, in which melodic interest is distributed among all parts of the musical texture.  The term may refer to a variety of melody-plus-accompaniment textures as well as to texture, termed homorhythmic, in which all parts move with the same or similar rhythm.
       
       

      Horn

      The horn takes its name from the horn of an animal, the original form of this wind instrument in ancient times. The instrument was long associated with hunting and as a means of military signalling. The instrument now generally known as the French horn developed in France in its familiar helical form, but in one form or another the horn had come to be a frequent instrument in music for the church, the theatre and the chamber by the early 18th century. The natural horn was able to play the notes of the harmonic series, modified by the use of the right hand in the bell of the instrument, and in different keys by the use of different crooks that changed the length of the tube and hence the length of the air column. The valve horn was developed in the first quarter of the 19th century, its two and later three valves making variations possible in the length of tube and hence in the pitch of the fundamental and harmonic series stemming from it, but the natural horn continued in use at the same time. The double horn was developed in the late 19th century and is now in common use. Concertos for the French horn include the four concertos by Mozart. In the classical orchestra the two horns played a largely sustaining part. The modern orchestra normally has four French horns. The hunting associations of the horn led to its evocative use in Romantic music, as in Weber’s opera Der Freischütz, and in the same composer’s opera Oberon, in which the horn has a magic rôle to play.
       
       

      Hornpipe

      The hornpipe is a rapid British dance that exists in various metres, triple, duple and quadruple. In its earlier English form it is found in the keyboard suites and stage music of the English composer Henry Purcell, and in keyboard and orchestral movements by Handel. It later came to be popularly associated particularly with sailors in the so-called Sailors’ Hornpipe derived from a fiddle-tune.
       
       

      Humoresque

      Schumann was the first composer to use the title Humoreske for a relatively long work for piano, the humour of the title used rather in the sense of a mood of one sort or another. The word later came to indicate very much shorter pieces, such as the well known G flat Humoresque by Dvor*ák, one of a set of eight.
       
       

      Hymn

      A hymn is a song of praise, whether to a god, saint or hero. The plainchant hymn has a place in the Divine Office. In Protestant Christian worship, where the hymn assumed considerable importance, after the chorales of Martin Luther and his followers, the metrical homophonic form dominated.