Panel Display Layout

I've accidentally moved the tag panel to the top. How to I put it back on the left side?

I don't know if this thread is already explanation enough:

To undock the tag panel, press on the slim divider close to the top-left-corner "x" of the tag panel and drag tag panel. Then follow the other instructions to get it in place again.

It the tag panel isn't visible at all, click on View -> Tag-Panel (or press CTRL + Q).

If you can't drag & drop the panel from the top to the left position, enlarge the Mp3tag program window and try it again: