When we add music to our website, we have to consider that some readers may not like music in general or the particular music attached to the webpage, while reading the webpage.
It is a good idea to show the "player", so that the reader can have the choice of turning the music off or adjusting the volume of the music.
Some people attach a loud or high pitch music in maximum volume without player. Please remember that what you like is not necessarily loved by others.

So, please try to use the following codings.
Instead of volume="0", use volume="3" (not maximum but middle),
Instead of hidden="true", use hidden="false" and then write the dimension of width and height.

In current browsers and HTML, the default player is not much adjustable to our likings. We can only change the size with limited colors. 

Nowadays, there are a lot of attractive music players created as a part of SWF files but generally, these are proprietary and we can not adapt them to our own webpages.

Here are one series of modifications with a known song, with pure HTML codes without using SWF file. These may look a little better than what we used to have. You are welcome to try.

All you have to do is copying the codes below the player and replace the URL of the music file and change the size and color of the text about the song. Also change the "audio type" depending on the type of the audio file (wma or mp3...etc).