Denver could use a good chamber orchestra, writes Marc Shulgold. Most of the pieces are in place to create one. All it takes is a little money. “Who doesn’t like Bach, Handel and Vivaldi? Who wouldn’t enjoy a Mozart or Haydn symphony played as originally conceived? What’s not to like in those sumptuous string-orchestra pieces by Tchaikovsky, Elgar, Vaughan Williams, Grieg and Dvorak? Particularly when they’re played with professional polish?”