<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">Wagner tubas</topic></authority><related type="other"><topic>French horns</topic></related><related type="broader"><topic>tubas</topic></related><variant type="other"><topic>Wagner tuba</topic></variant><variant type="other"><topic>tuba, Wagner</topic></variant><variant type="other"><topic>tubas, Wagner</topic></variant><variant type="other"><topic>wagner tuba</topic></variant> <note xml:lang="en"><![CDATA[ Tubas in elliptical shape with a conical bore that widens steadily throughout its length, terminating in a small bell, and having four rotary valves and a French horn mouthpiece. They were originally made to the specifications of Richard Wagner for use in his opera cycle "Der Ring des Nibelungen." ]]></note></mads>