<?xml version="1.0" encoding="utf-8"?><metadata xmlns:dc="http://purl.org/dc/elements/1.1/"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dcterms="http://purl.org/dc/terms/"><dc:title xml:lang="en">valve trombones</dc:title><dc:identifier>http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31476232</dc:identifier><dc:language>en</dc:language><dc:publisher xml:lang="en">Getty Institute</dc:publisher><dcterms:created>2026-03-30 21:08:15</dcterms:created><dcterms:isPartOf xsi:type="dcterms:URI">http://AATesaurus.cultura.gencat.cat/aat/getty_en</dcterms:isPartOf><dcterms:isPartOf xml:lang="en">Tesaurus d&apos;Art i Arquitectura</dcterms:isPartOf><dc:format>text/html</dc:format> <dcterms:alternative xml:lang="en">trombones, valve</dcterms:alternative> <dcterms:alternative xml:lang="en">valve trombone</dcterms:alternative> <dc:description xml:lang="en"><![CDATA[ Trombones that operate with at least three valves rather than a slide mechanism. These may have originated in Vienna ca.1830, but evidence exists of earlier versions. The valves were added to avoid the intricacies of maneuvering the slide, and made playing fast passages easier. The instrument remains in use in orchestras and also in jazz ensembles. ]]></dc:description></metadata>