The boutique advertising agency also represents Rock of Ages and Natasha, Pierre.
Williams will make his Broadway debut as part of the show's #BroadwayBlitz in celebration of Super Bowl XLVIII.
Rock of Ages is also one of the Broadway performances slated for Super Bowl Sunday.
The head-banging musical launches a video contest to celebrate its Super Bowl gig.
Broadway's hottest rock stars hit the stage to support The PATH Fund.