What makes a concert special?

Part of my job is to run a major concert fundraiser every year.

I asked the band that we are going to book this year to play one of their older, "classic" albums in its entirety to put a special spin on the event. It was meant to be tied to the 20th anniversary re-release of said album.

Found out yesterday that the album re-release has been delayed by several months.

Now I have to come up with other angles to make this show stand out from a typical performance. This is so we can charge a little bit more money for the tickets and raise critically needed money for a worthy cause.

This is a open call to the select readership of this blog for suggestions. What can we ask the artist to do to make this show memorable?

Feel free to post your ideas in the comments section.