You never said your ethnicity, but you look like the typical Asian applicant: great test scores, ISEF, chess club, and music. With so many fellow violion playing, 2400-scoring, national science competition semi-finalists competing for a limited numbers of slots, people falling in this mold really have to walk on water to get in. Nonetheless, I think you will stand out even in that competitive pool. Good luck! Hope you join the class of 2010!