but Home and Contact is nothing, Music videos is only redirect to YOUTUBE channel.
So we should follow Music player mode page.
firstly, we should understand how it works.
this html5 will download source of music file when we click on this picture.
follow the link we can leak something
Now, we can leak source code. robots file shows the backend system is in admin/
so try to leak index.php
And flag is in config.php