Renée FlemingMiro Vrlik Photography / Shutterstock.com When it was announced earlier this week that Renée Fleming would sing the National Anthem at the Super Bowl on Feb 2nd, I was overjoyed. Others were bemused, even critical — after all, no opera singer has opened the football championship before. So why can’t there be a first? I asked. Since I’m penning a collection of humorous essays based on my mother Margery’s…