glissando n : a rapid series of ascending or descending notes on the musical scale adv : (musical direction) in the manner of a glissando (with a rapidly executed series of notes); "this should be played glissando, please" [also: glissandi (pl)]
- A musical term that refers to either a continuous sliding one pitch to another (or "true" glissando), or an incidental scale played while moving from one melodic note to another (or "effective" glissando).
External linksWikipedia article on 'Glissando'
- In the style of a glissando
Nounglissando m inv
"Glissando" (plural: glissandi, abbreviated gliss.) is a glide from one pitch to another. It is an Italianized musical term derived from the French glisser, to glide.
Glissando vs. PortamentoPrescriptive attempts to distinguish the glissando from the portamento by limiting the former to the filling in of discrete intermediate pitches on instruments like the piano, harp and fretted strings have run up against established usage of instruments like the trombone and timpani. The latter could thus be thought of as capable of either 'glissando' or 'portamento', depending on whether the drum was rolled or not. The clarinet gesture that opens Rhapsody in Blue could likewise be thought of either way, being originally for piano, but is in practice played as a portamento and described http://en.wikipedia.org/wiki/Rhapsody_in_blue#_note-8 as a glissando. In cases where the destination and goal pitches are reduced to starting and stopping points as in James Tenney's Cellogram, or points of inflection, as in the sirens of Varèse's Hyperprism, the term portamento (conjuring a decorative effect) seems hardly adequate for what is a sonorous object in its own right and these are called glissando.
'Discrete glissando'On some instruments (e.g., piano, harp, xylophone), discrete tones are clearly audible when sliding. For example, on a piano, the player can slide his/her thumb or fingers across the white or black keys, producing either a C major scale or an F# major pentatonic (or their relative modes). On a harp, the player can slide his/her finger across the strings, quickly playing the separate notes or even an arpeggio (for example b, c flat, d, e sharp, f, g sharp, a flat). Wind, brass and fretted stringed instrument players can effect an extremely rapid chromatic scale (ex: sliding up or down a string quickly on a fretted instrument), going through an infinite number of pitches. Arpeggio effects (likewise named glissando) are also obtained on the harmonic series by bowed strings and brass, especially the french horn.
'Continuous glissando' or PortamentoMusical instruments with continuously variable pitch can effect a portamento over a substantial range. These include unfretted stringed instruments (such as the violin, viola, cello and double bass and fretless bass guitars), stringed instruments with a way of stretching the strings (such as the guitar or sitar), wind instruments without valves or stops (such as the trombone or slide whistle), timpani (kettledrums), electronic instruments (such as the theremin, the ondes martenot, synthesizers and keytars), the water organ, and the human voice. The musical saw, or "singing saw" plays entirely in a glissando.
Portamenti can be produced over a limited range on most instruments; for example, fretted stringed instruments (such as the guitar or mandolin) can effect a portamento by pushing the string across the fingerboard or by using a slide. This is commonly called note bending rather than a portamento. Brass and wind instruments such as the flute or trumpet can effect a similarly limited slide by altering the breath pressure, while the clarinet can achieve this by slowly dragging fingers off tone holes. The trombone is especially conducive to producing portamenti of up to an augmented fourth, though the effect is limited by the slide position and partial of both notes involved. Tunable percussion instruments such as the drum or conga can effect this by applying or releasing pressure on the head while striking.
On many electric guitars, the vibrato arm (often mistakingly referred to as a tremolo bar or "trem") - if the particular guitar has such a device installed - can also produce a portamento. By pressing the arm towards the body of the guitar, the guitarist moves the bridge of the guitar both away from the body and forward (towards the headstock), thereby decreasing string tension and lowering the pitch any notes that are sounding. This technique can often produce portamenti of incredible range, with the guitarist often being able to reduce tension to the point that the strings become slack. Such a portamento however is rarely used to melodic effect, instead being implemented as a special effect. Some guitars feature a vibrato that is also capable of being pulled away from the guitar body, resulting in an increase in string tension and therefore an increase in pitch. While the range of these upward portamenti is also often quite large, caution must be exercised when raising the pitch substantially, as the tension can become great enough to break one or more of the guitar's strings.
Portamento can often be generated automatically on synthesizers, where a parameter setting can be used to control the speed at which an oscillator moves to a new pitch. Often this parameter is called glide. Alternatively, portamento effects can be produced manually by a skilled player by the use of the pitch wheel at the side of most synthesizer keyboards. Synth lines with lots of portamento defined West Coast G funk of the mid 1990s, and continue to be a distinctive part of electronic music today, as well as progressive rock music (see Dream Theater's Jordan Rudess.)
In MIDI sequencing, portamento can be generated by using a channel message that creates a sliding effect by smoothly changing pitch from the last note played to the pitch of the currently playing note.
The Casio CZ-101 was one of the first synthesizers to have a polyphonic portamento effect.
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