Violinist Ilya Kaler is a violinist's violinist. He has won Gold Medals in the Tchaikovsky, Sibelius and Paganini Competitions. His bow dancing and his fingers moving like butterflies, Kaler "laughs" at the technical difficulties in the final movement of the Paganini Violin Concerto No. 1. To hear him is to see fireworks. Kaler's performance of the Paganini with the Minnesota Sinfonia is in this week's Regional Spotlight.