<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31383992</termId><termName>music rolls</termName><termType>PT</termType><termNote><![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. ]]></termNote><termCreatedDate>2026-03-30 20:27:08</termCreatedDate><relation><relationType>UF</relationType><termId>31383993</termId><termName>music roll</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31383994</termId><termName>player piano roll</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31383995</termId><termName>player piano rolls</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31383996</termId><termName>rolls, music</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31307133</termId><termName>sound device components</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31395135</termId><termName>calliopes</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31395343</termId><termName>player pianos</termName><termType>PT</termType></relation></term>  </Zthes>