Secret Concert?
 

The people at the hot dog cart at the Center Harbor Docks told my family there was going to be a concert with a mystery performer on Labor Day. Unfortunately, we couldn't see it, but I am very curous as to who this "mystery" performer was. Was anybody there?

Shhhhhhhhhh.....
 

Elvis. Janis Joplin opening.

But you didn't hear that from me.