This Thursday’s giveaway involves the man who started the “Greatest Hits” tradition, the man who celebrated his 50th anniversary as a recording star in 2006, the man who was inducted into the Grammy Hall of Fame twice and received the 2003 Lifetime Achievement Award by the Academy of Recording Arts and Sciences, and the man, Johnny Mathis. He’s performing with the DSO on August 21st and we have a pair of tickets to giveaway. To get your hands on them all you have to do is answer the question in the form below: Name the three US presidents that Mathis has performed for. We’ll pick a winner after 3pm.