Would probably not have watched this show, but my sister found tickets for half-off. The show came out to about $20.
The performers/impersonators were
Elvis - good
Britney Spears - ok
Charlie Daniels - excellent
Carrie Underwood - ok
Michael Jackson - ok.
If you are a huge fan of any of these artists (as I am), you will be slightly disappointed. It's not at the level where you might believe they are the real person. Overall, it was a good show.