Beethoven was only 22 when he first arrived in Vienna, and spent a handful of years finding his way — playing concerts, composing music and becoming a part of the musical and social scene. The Claremont Trio is similarly young and talented: The violinist and cellist are 25-year-old twins, and the pianist is 27. They've already been Carnegie Hall Fellows and embarked on an impressive touring career. From a recent concert at the Isabella Stewart Gardner Museum in Boston, here's the Trio, Op. 11, by the young Beethoven.