Editing String quartet (section)

=== In the 20th century ===
[[File:Schoenberg string quartet exc. quartal chord.png|thumb|String quartet [[musical notation|score]] ([[quartal and quintal harmony|quartal harmony]] from Schoenberg's [[String Quartets (Schoenberg)#String Quartet No. 1, op. 7|String Quartet No. 1]])[[File:Schoenberg string quartet exc. quartal chord.mid]]|upright=1.3]]In the modern era, the string quartet played a key role in the development of [[Arnold Schoenberg|Schoenberg]] (who added a [[soprano]] in his [[String Quartet No. 2 (Schoenberg)|String Quartet No. 2]]), [[Béla Bartók|Bartók]], and [[Dmitri Shostakovich|Shostakovich]] especially. After the [[Second World War]], some composers, such as [[Olivier Messiaen|Messiaen]] questioned the relevance of the string quartet and avoided writing them.{{Citation needed|date=February 2023}} However, from the 1960s onwards, many composers have shown a renewed interest in the genre. 

During his tenure as [[Master of the Queen's Music]], [[Peter Maxwell Davies]] produced a set of ten entitled the [[Naxos Quartets]] (to a commission from [[Naxos Records]]) from 2001 to 2007. [[Margaret Jones Wiles]] composed over 50 string quartets. [[David Matthews (composer)|David Matthews]] has written eleven, and [[Robin Holloway]] both five quartets and six "quartettini". Over nearly five decades, [[Elliott Carter]] wrote a total of five string quartets, winning [[Pulitzer Prize for Music|Pulitzer Prizes]] for two of them, [[String Quartet No. 2 (Carter)|No. 2]] and [[String Quartet No. 3 (Carter)|No. 3]]. Three important string quartets were written by [[Helmut Lachenmann]].  The late 20th century also saw the string quartet expand in various ways: Morton Feldman's vast Second String Quartet is one of the longest ever written, and Karlheinz Stockhausen's [[Helikopter-Streichquartett]] is to be performed by the four musicians in four helicopters.
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