<?xml version="1.0" encoding="utf-8"?>
<text>
 <s id="1">
    <w id="1.1">Vào</w>
    <w id="1.2">giữa</w>
    <w id="1.3">thế</w>
    <w id="1.4">kỷ</w>
    <w id="1.5">16</w>
    <w id="1.6">,</w>
    <w id="1.7">người</w>
    <w id="1.8">Ý</w>
    <w id="1.9">đã</w>
    <w id="1.10">bị</w>
    <w id="1.11">thu</w>
    <w id="1.12">hút</w>
    <w id="1.13">bởi</w>
    <w id="1.14">những</w>
    <w id="1.15">nam</w>
    <w id="1.16">ca</w>
    <w id="1.17">sĩ</w>
    <w id="1.18">có</w>
    <w id="1.19">quãng</w>
    <w id="1.20">giọng</w>
    <w id="1.21">đáng</w>
    <w id="1.22">kinh</w>
    <w id="1.23">ngạc</w>
    <w id="1.24">thường</w>
    <w id="1.25">được</w>
    <w id="1.26">cho</w>
    <w id="1.27">là</w>
    <w id="1.28">không</w>
    <w id="1.29">thể</w>
    <w id="1.30">với</w>
    <w id="1.31">đàn</w>
    <w id="1.32">ông</w>
    <w id="1.33">trưởng</w>
    <w id="1.34">thành</w>
    <w id="1.35">.</w>
</s>
 <s id="2">
    <w id="2.1">Tuy</w>
    <w id="2.2">nhiên</w>
    <w id="2.3">,</w>
    <w id="2.4">món</w>
    <w id="2.5">quà</w>
    <w id="2.6">này</w>
    <w id="2.7">phải</w>
    <w id="2.8">trả</w>
    <w id="2.9">bằng</w>
    <w id="2.10">một</w>
    <w id="2.11">cái</w>
    <w id="2.12">giá</w>
    <w id="2.13">đắt</w>
    <w id="2.14">.</w>
</s>
 <s id="3">
    <w id="3.1">Để</w>
    <w id="3.2">ngăn</w>
    <w id="3.3">quá</w>
    <w id="3.4">trình</w>
    <w id="3.5">bể</w>
    <w id="3.6">giọng</w>
    <w id="3.7">,</w>
    <w id="3.8">những</w>
    <w id="3.9">ca</w>
    <w id="3.10">sĩ</w>
    <w id="3.11">này</w>
    <w id="3.12">phải</w>
    <w id="3.13">cắt</w>
    <w id="3.14">bỏ</w>
    <w id="3.15">tinh</w>
    <w id="3.16">hoàn</w>
    <w id="3.17">trước</w>
    <w id="3.18">khi</w>
    <w id="3.19">dậy</w>
    <w id="3.20">thì</w>
    <w id="3.21">,</w>
    <w id="3.22">làm</w>
    <w id="3.23">ngắt</w>
    <w id="3.24">quãng</w>
    <w id="3.25">quá</w>
    <w id="3.26">trình</w>
    <w id="3.27">sản</w>
    <w id="3.28">sinh</w>
    <w id="3.29">hóoc-môn</w>
    <w id="3.30">khiến</w>
    <w id="3.31">giọng</w>
    <w id="3.32">của</w>
    <w id="3.33">họ</w>
    <w id="3.34">trầm</w>
    <w id="3.35">hơn</w>
    <w id="3.36">.</w>
</s>
 <s id="4">
    <w id="4.1">Biết</w>
    <w id="4.2">đến</w>
    <w id="4.3">như</w>
    <w id="4.4">những</w>
    <w id="4.5">Castrato</w>
    <w id="4.6">,</w>