Why don't the "hidden" and "loop" attribute do anything?

Question

Ok, i pretty much just finished my tetris game. So now i wanted to implement the music - which i did like this: <embed src="Tetris.mp3" autostart="true" loop=infinite hidden="true">

Now, the autostart works, but the music doesn't loop after it ends, and also the music player isn't hidden. I'm using Microsoft Edge, by the way.

Answer 1

It should be like this

<audio controls autoplay loop hidden>
  <source src="Tetris.mp3" type="audio/mpeg">
</audio>