# Strum

In music, strumming is a way of playing a stringed instrument such as a guitar, ukulele, or mandolin. A strum or stroke is a sweeping action where a finger or plectrum brushes over several strings to generate sound. On most stringed instruments, strums are typically executed by a musician's designated strum hand (typically the musician's dominant hand, which is often responsible for generating the majority of sound on a stringed instrument), while the remaining hand (referred to as the fret hand on most instruments with a fingerboard) often supports the strum hand by altering the tones and pitches of any given strum.
Strums are often contrasted with plucking, as a means of vibrating an instrument's strings. In plucking, a specific string or designated set of strings are individually targeted to vibrate, whereas in strumming, a less precise targeting is usually used. Compared to other plucking techniques, any group of strings brushed in a single sweep by a plectrum could be considered a strum due to the plectrum's less precise string group targeting (however, a plectrum might simultaneously pluck a small group of strings without being considered a strum). In contrast, a musician could utilize a technique with more precise string group targeting (such as a fingerstyle or fingerpick technique) to pluck all the strings on a stringed instrument at once and this would still be considered a pluck, not a strum.

## Strumming patterns

A strumming pattern or strum is a preset pattern used by a rhythm guitar. For example, a pattern in common time or $^4$ $_4$ consisting of alternating down and up eighth note strokes may be written:
    1&2&3&4&
    dudududu

### Rock and pop

The pattern most typical of rock and related styles is:
    1&2&3&4&
    d du udu
The final upstroke is sometimes omitted altering the strumming pattern slightly to d du ud. This pattern is often called "Old Faithful", or when played on ukulele, the "Island Strum".
Examples of other strumming patterns include:
* Single down strum: d d d d
** Elvis' "Burning Love"
** Kathy Mattea's "What Could Have Been"
* Boom-chicka: d dud du
** Merle Haggard's "Silver Wings"

### Jazz and funk

The simple four-to-a-bar rhythm is associated with jazz guitarists such as Freddie Green, although they may subtly vary the rhythm of a chord on some beats to add interest.
A simple eight-to-a-bar (8 eighth notes) rhythm is known as "straight eights" as opposed "swung eights", in which each pair are played in a rhythm that resembles the first and third notes in a triplet.
The fretting hand can also mute the strings on the fretboard to damp a chord, creating staccato and percussive effects. In reggae and ska, a few staccato "chops" are played per bar. In funk rhythm playing, the strumming hand keeps a fairly steady motion in 16th notes, while the left hand, basically holding down a jazz chord damps some of them in a syncopated pattern.

## Fingerstyle strumming strokes

Some of the many possible fingerstyle strums include
* A slow downstroke with the thumb. This is a sforzando or emphatic way of playing a chord.
* Light "brushing" strokes with the fingers moving together at a near-perpendicular angle to the strings. Works equally in either direction and can be alternated for a chord tremolo chord effect.
* Upstrokes with one finger make a change from the standard downstroke strum.
* A "pinch" with the thumb and fingers moving towards each other gives a crisp effect. It is helpful to clearly articulate the topmost and bass note in the chord, as if plucking, before "following through".
* Rasgueado: Strumming is typically done by bunching all the right-hand fingers and then flicking them out in quick succession to get four superimposed strums. The rasgueado or "rolling" strum is particularly characteristic of flamenco.
* Turning p-a-m-i tremolo plucking into a series of downstrokes. This is a lighter version of the classic rasgueado, which uses upstrokes.