Good calls on Kam and Helseth. Both are fantastic young players with beautiful tone and wonderful musicality. There is a wonderful video on Youtube of Kam playing the Mozart clarinet concerto on a basset clarinet with the extended range that Mozart wrote and intended as opposed to how it is usually played (low register passages played one octave higher because of the standard clarinet's more limited range). Helseth in particular has an unusually beautiful trumpet tone with a remarkable ease and lack of tension in her sound. For the geeks: notice the lack of tension in her face and mouth when she plays in contrast to the tightness and contortions that one sees from many brass players; a major contributor to that gorgeous tone. She had a great teacher.
http://m.youtube.com/watch?v=ASB6hFUat4g
http://m.youtube.com/watch?v=ASB6hFUat4g