<?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">pitch pipes</topic></authority><related type="broader"><topic>tuning devices</topic></related><variant type="other"><topic>pitch pipe</topic></variant><variant type="other"><topic>pitch-pipe</topic></variant><variant type="other"><topic>pipe, pitch</topic></variant><variant type="other"><topic>pipes, pitch</topic></variant><variant type="other"><topic>pipes, tuning</topic></variant><variant type="other"><topic>pitchpipe</topic></variant><variant type="other"><topic>pitchpipes</topic></variant><variant type="other"><topic>tuning pipes</topic></variant> <note xml:lang="en"><![CDATA[ Wood pipes used to sound specific pitches, usually for singers. Some models are of pistonlike construction, with a calibrated plunger pushed in or pulled out to give various pitches; models without a plunger give a single standard pitch. ]]></note></mads>