There must have been a time, in sunnier days, when the idea of 400 tubas playing holiday tunes in Skyline Park sounded like a really cool idea. In fact, the Tuba Christmas Concert, now in its 29th year in downtown Denver, bills itself as "one of the most celebrated and longest-running holiday festivities in Colorado."
But that was before the weekend arctic blast presented special challenges to the hearty horn players -- as well as their shivering audience. With the temperature sinking below z
