<?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">music rolls</topic></authority><related type="other"><topic>calliopes</topic></related><related type="other"><topic>player pianos</topic></related><related type="broader"><topic>sound device components</topic></related><variant type="other"><topic>music roll</topic></variant><variant type="other"><topic>player piano roll</topic></variant><variant type="other"><topic>player piano rolls</topic></variant><variant type="other"><topic>rolls, music</topic></variant> <note xml:lang="en"><![CDATA[ Rolls of paper meant to be used as scores for mechanical instruments such as player pianos and fairground organs. Perforations are made on the paper which allows the mechanical keys of the instruments to create sound via air flow though the perforations. ]]></note></mads>