controls show when none are specified.

[mf0hka]

Consider this tag:

   <audio autoplay="autoplay"  > 
      <source src="OVERWERK_Daybreak.mp3"> 
   </audio>

The control bar shows up, despite not having been specified with the "controls" attribute. Honestly, I Don't even care, about that, but I do want the audio player to be hidden, and the hidden attribute doesn’t seem to do any hiding. Is there a method for hiding the audio player?