Erro : main.js:3 Uncaught TypeError: Cannot read properties of null (reading 'play')

fiz o passa a passo da forma que foi dita e eu não estou conseguindo executar pot conta do erro.

<title>Sons</title>

<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Montserrat:wght@500;600&display=swap" rel="stylesheet">

<link rel="icon" type="image/png" href="images/bateria.png">
<link rel="stylesheet" href="css/reset.css">
<link rel="stylesheet" href="css/estilos.css">

<h1>Alura Midi</h1>

<section class="teclado">
    <button class="tecla tecla_pom">Pom</button>
    <button class="tecla tecla_clap">Clap</button>
    <button class="tecla tecla_tim">Tim</button>

    <button class="tecla tecla_puff">Puff</button>
    <button class="tecla tecla_splash">Splash</button>
    <button class="tecla tecla_toim">Toim</button>

    <button class="tecla tecla_psh">Psh</button>
    <button class="tecla tecla_tic">Tic</button>
    <button class="tecla tecla_tom">Tom</button>
</section>

<audio controls  src="sounds/keyq.wav" id="som_tecla_pom"></audio>
<audio controls  src="sounds/keyw.wav" id="som_tecla_clap"></audio>
<audio controls src="sounds/keye.wav" id="som_tecla_tim"></audio>
<audio controls src="sounds/keya.wav" id="som_tecla_puff"></audio>
<audio controls src="sounds/keys.wav" id="som_tecla_splash"></audio>
<audio controls src="sounds/keyd.wav" id="som_tecla_toim"></audio>
<audio controls src="sounds/keyz.wav" id="som_tecla_psh"></audio>
<audio controls src="sounds/keyx.wav" id="som_tecla_tic"></audio>
<audio controls src="sounds/keyc.wav" id="som_tecla_tom"></audio>

<script src="main.js"></script>

function tocaSomPom () {

document.querySelector('#som_teclado_pom').play();

} document.querySelector('.tecla_pom');