They invited Lupe Fiasco to be part of the pre-inaugural concert, and indeed, he was one. They pulled his lights, sound, and microphone when the dear gentle rapper decided to go all negative on The Beloved Leader.
(Video not for the faint of heart. It’s delightful if you happen to have a rebel side.)
Be sure to read the first link to gain the concert organizer perspective.
I suppose that guest list will be tweaked in the future.