How to put music or audio player on Blogger?

You just need to add the code below to the blog post in HTML mode or paste in the HTML/Javascript gadget. Replace url-of-audio-file with your audio file's url. You can host your audio file on Google Drive or anywhere else.

<audio controls autoplay>
<source src="url-of-audio-file" />
If you cannot see the audio controls, your browser does not support the audio element
</audio>