The $6 Discount is no longer available, but you should be able to still save $3 on your tickets when you purchase them through Quicken Loans event site.
Here is a promo trailer:
You can also check out some sketches of the costumes on their Facebook album.
No compensation was received for this post. As a Feld Family Blogger, my family is given the opportunity to see the show. The tickets for my family, the giveaway and the information about the show and discounts were provided by Feld Entertainment.