With the minor avalanche of new concert venues opening in the past year or so, I have to wonder over how a booming economy creates new symphony halls which are built in the ensuing years, only to open after the boom has gone bust, ready to cheer up a down economy. The Detroit Symphony is the latest to enjoy the fruits of the late 1990s with the new Max M. Fisher Music Center opening this week. As the Associated Press puts it, it’s “a venue to match its reputation.” They could have also added the word “finally” to that statement, as the Symphony and its audience have suffered long years with inadequate facilities and climate control. The Center is Phase Two of a three part, $220 million project to revitalize the neighborhood around the hall. Next up is a building to house the Detroit High School for the Fine, Performing and Communication Arts.