What is called classical music mostly refers to the Western symphony orchestra tradition that starts in the seventeenth century with Vivaldi and peaks in the early twentieth with Mahler. While classical music remains popular, my unscientific sampling of concert hall audiences indicates that the demographic skews to retirement age and above. I don’t know if this means that a generation of music lovers is about to depart or that people only have the patience to sit through a long concert when they are older. In an attempt to introduce a new generation to classical music, I thought I would present a selection each week. And what’s a better way to kick it off then with the pseudo-Baroque precursor to heavy metal, the Praeludium and Allegro by Fritz Kreisler. Kreisler performed in the first half of the twentieth century. He was one of the greatest violin virtuosos of all time and also wrote some great violin ditties. Here is a performance by the then 13 year old Canadian/American violinist Leila Josefowicz in 1991.