Editing Overtone (section)

===String instruments===
{{Main|String harmonic}}
[[File:Flageolette.svg|thumb|upright=1.5|Playing a harmonic on a string. Here, "+7" indicates that the string is held down at the position for raising the pitch by 7 half notes, that is, at the seventh fret for a fretted instrument.]]
String instruments can also produce multiphonic tones when strings are divided in two pieces or the sound is somehow distorted. The [[sitar]] has sympathetic strings which help to bring out the overtones while one is playing. The overtones are also highly important in the [[tanpura]], the drone instrument in traditional [[Music of India|North and South Indian music]], in which loose strings tuned at octaves and fifths are plucked and designed to buzz to create sympathetic resonance and highlight the cascading sound of the overtones.

Western string instruments, such as the [[violin]], may be played close to the bridge (a technique called "[[sul ponticello]]<ref>{{Cite book|last=Allen|first=Strange|title=The Contemporary Violin: Extended Performance Techniques|url=https://www.amazon.com/Contemporary-Violin-Performance-Techniques-Instrumentation-ebook/dp/B009D1FRF0|access-date=2021-02-27|via=www.amazon.com|date=21 January 2003 |publisher=Scarecrow Press }}</ref>" or "am Steg") which causes the note to split into overtones while attaining a distinctive glassy, metallic sound. Various techniques of [[Bowed string instrument extended technique|bow pressure]] may also be used to bring out the overtones, as well as using string nodes to produce natural harmonics. On violin family instruments, overtones can be played with the bow or by plucking. Scores and parts for Western violin family instruments indicate where the performer is to play harmonics. The most well-known technique on a guitar is playing [[flageolet tone]]s or using [[distortion]] effects. The ancient Chinese instrument the [[guqin]] contains a scale based on the knotted positions of overtones. The Vietnamese [[đàn bầu]] functions on flageolet tones. Other multiphonic [[extended techniques]] used are [[prepared piano]], [[prepared guitar]] and [[3rd bridge]].