Oh...a "free" concert paid for with our Federal taxes. Do you really think that's any kind of rebuttal to my point? These PR concerts by military bands are always free, and take place all over the country.
Is the Shedd being paid for use of the venue? Why isn't the concert in a public park, where I've seen similar concerts in other cities?
I love your attitude: "Here's something free, whether or not it's something you like. Win/Win...now shut up".