Today, Alina Pogostkina is a professional violinist. Twenty years ago, she was a homeless eight year-old street musician. Her family was destitute when they moved from the collapsed Soviet Union to Heidelberg, Germany in 1992. For a while they survived by playing music on the streets -- father, mother, and eight year-old daughter, all playing their violins. On Monday's Performance Today, the remarkable story of violinist Alina Pogostkina.