37, is a composition for string quartet by Karol Szymanowski.
[1][2] It is notable for its "polytonal" third movement, which contains four key signatures in its written four parts: the first violin with 3 sharps, the second violin with 6 sharps, the viola with 3 flats, and the cello with no flats or sharps.
[3] Dedicated to the French musicologist Henry Prunières, the work won the first prize in the Polish Ministry of Religious Denominations and Public Enlightenment's chamber music competition.
[3] Szymanowski planned on including a fourth movement, a fugal finale, but the idea ultimately got scrapped.
String quartets who have recorded the piece include:[5] This article about a composition for a chamber music group is a stub.