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Tremolo
In music, tremolo (Italian pronunciation: [ˈtrɛːmolo]), or tremolando ([tremoˈlando]), is a trembling effect. There are multiple types of tremolo. It is either the rapid repetition of a note, alternation between two different notes, or variation in volume.
Tremolos may be either measured, in which the exact rate of repetition or oscillation is specified, or unmeasured, in which it is not (the understanding being in that case that it should be performed as rapidly as possible).
The rapid reiteration of a single note is a characteristic effect of bowed string instruments, obtained by rapidly moving the bow back and forth. However, the technique may be performed on any instrument on which it is practicable. (Indeed, a slow measured tremolo is simply a shorthand notation for an ordinary repetition of notes; thus, tremolo notation may appear in written music for any instrument.)
The notation for this effect consists of one or more strokes drawn through the stem of a note (or, if the note lacks a stem, through the position that a hypothetical stem would occupy); the strokes correspond to the beams that would connect the individual repeated notes if they were to be written out, thereby representing the rate of repetition (the speed of the tremolo).
Some special cases are worth noting:
A rapid alternation between two different pitches is another type of tremolo. On bowed string instruments, this is referred to as a fingered tremolo to distinguish it from the bowed tremolo discussed above; but once again it may be performed on any instrument. It is notated by writing the pitches to be alternated as a melodic interval, with both notes receiving the rhythmic value of the total duration of the tremolo (e.g. two half-notes for a tremolo lasting a half-note), and then either connecting them with beams, or else interpolating strokes, with the number of beams or strokes corresponding to the speed of the tremolo (e.g. a tremolo in thirty-second notes lasting a half-note would be written either as two open noteheads connected by three beams, or as two half-notes with three strokes interpolated).
This type of tremolo includes the trill as a special case: a trill is simply an unmeasured tremolo between two notes separated by the interval of a major or minor second (whole- or half step). Thus, a tremolo in this sense is a generalization of a trill to any interval, and to include measured durations.
A separate type of tremolo is a variation in amplitude:
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Tremolo
In music, tremolo (Italian pronunciation: [ˈtrɛːmolo]), or tremolando ([tremoˈlando]), is a trembling effect. There are multiple types of tremolo. It is either the rapid repetition of a note, alternation between two different notes, or variation in volume.
Tremolos may be either measured, in which the exact rate of repetition or oscillation is specified, or unmeasured, in which it is not (the understanding being in that case that it should be performed as rapidly as possible).
The rapid reiteration of a single note is a characteristic effect of bowed string instruments, obtained by rapidly moving the bow back and forth. However, the technique may be performed on any instrument on which it is practicable. (Indeed, a slow measured tremolo is simply a shorthand notation for an ordinary repetition of notes; thus, tremolo notation may appear in written music for any instrument.)
The notation for this effect consists of one or more strokes drawn through the stem of a note (or, if the note lacks a stem, through the position that a hypothetical stem would occupy); the strokes correspond to the beams that would connect the individual repeated notes if they were to be written out, thereby representing the rate of repetition (the speed of the tremolo).
Some special cases are worth noting:
A rapid alternation between two different pitches is another type of tremolo. On bowed string instruments, this is referred to as a fingered tremolo to distinguish it from the bowed tremolo discussed above; but once again it may be performed on any instrument. It is notated by writing the pitches to be alternated as a melodic interval, with both notes receiving the rhythmic value of the total duration of the tremolo (e.g. two half-notes for a tremolo lasting a half-note), and then either connecting them with beams, or else interpolating strokes, with the number of beams or strokes corresponding to the speed of the tremolo (e.g. a tremolo in thirty-second notes lasting a half-note would be written either as two open noteheads connected by three beams, or as two half-notes with three strokes interpolated).
This type of tremolo includes the trill as a special case: a trill is simply an unmeasured tremolo between two notes separated by the interval of a major or minor second (whole- or half step). Thus, a tremolo in this sense is a generalization of a trill to any interval, and to include measured durations.
A separate type of tremolo is a variation in amplitude: