<n1:request xmlns:n1="http://freedesktop.org/standards/xesam/1.0/query">
    <n1:query n1:content="xesam:Audio">
        <n1:startsWith>
            <n1:field>xesam:url</n1:field>
            <n1:string>/home/max/Music</n1:string>
        </n1:startsWith>
    </n1:query>
</n1:request>