Photo: Set up for Jay-Z and Mayor Michael at top of Art Museum steps. The two will announce Labor Day concert details. #philly

This is the set up at the top of the Philadelphia Art Museum steps where Jay-Z and Philadelphia Mayor Michael Nutter will announce the specifics of a Labor Day concert here in Philadelphia. Jay-Z and the mayor are expected here around 10 a.m. May, 14, 2012. Alejandro A. Alvarez / Philadelphia Daily News / © 2012 Philadelphia Media Network