Their names are iconic - Elvis Presley, Johnny Cash, Jerry Lee Lewis, and Carl Perkins. Each of these legendary singers and songwriters had individual careers that impacted the music industry in their own ways, but did you know for one night, they all gathered in the same place for a jam session unlike any other? That’s the story behind the musical “The Million Dollar Quartet” which is at the Detroit Music Hall presented by Hollywood Casino at Greektown.