Concert Calendar, auto-updating!
You have a private area on your site where you enter your upcoming concert dates. You can do this from any computer anywhere. You don't need to be a webmaster.
One line in your HTML code shows your upcoming concert dates in a pretty little customizable table.
Since the website knows what day it is, it automatically moves your past dates off the page, so you don't have to worry about updating all the time.
With this, you really can enter your tour dates in advance, then hit the road, knowing that your calendar is automatically updating every day.
There's a full tutorial on it, here.