For the past 25 years David Soldier has directed, in the most musical way, the Department of Neurology at Columbia University and at the same time, in the most scientific way, has created a provocative collection of music. From the Thai Elephant Orchestra to the punk-chamber String Quartet, David has performed, composed and arranged a few hundred works. His current project, "The Spinozas", explores the very beginning of song as it was in Medieval Andalusia, Spain.