More info: from
http://www.tski.co.jp/baldio/patch/20000417.html
APRIL 17, 2000
Today's patch consisted of preparations for the launch of Kunark, as well as some new art. The following spell changes were also included:
* Corrected a bug with a new bard song that allowed them to charm anything, such as deities and dragons.
* Added a lesser included wisdom effect with "Brilliance" as well as a lesser included intelligence effect with "Insight". These spells will no longer stack.
So bard charm was at level 55 at least all the way to right before kunark launch.