The violin, though centuries old, remains a popular yet remarkably unwieldy instrument. Just squeezing the contraption between your chin and shoulder, then raising your bow arm to the proper height, is enough to induce a pinched nerve. Yet every day countless numbers of people try to make the instrument sing.
The violin and viola that Wolfgang Amadeus Mozart played himself are in the United States for the first time ever. The instruments come out of storage only about once a year at the Salzburg Mozarteum in Austria. The rest of the time, they're kept under serious lockup.