This post explains to you how to add background music?

Question

To add background music do this:
<audio autoplay loop>
<source src="[url]" type="audio/[type]">
</audio>
But I do not know how to make audio play by pressing a button you made.

Answer 1

<audio controls>
<source src="[url]" type="audio/[type]">
</audio>

this shows what you want.

Answer 2

no I know controls I'm talking about when you press a button then a sound plays. For example you press an image of a cookie. Then it makes a mario coin sound.