An exciting new Youtube music project has been announced. Tan Dun, the legendary classical composer, wrote a piece specifically for this project that asks you to download the available sheet music, practice your piece, and submit your completed piece to Youtube. I imagine this could be very motivating for young musicians, and for me, something like this would have likely kept me interested in music (rather than kicking myself years later). Take a look for yourself.
Play your part in music history and join the YouTube Symphony Orchestra. You just need to upload two videos: your contribution to the Tan Dun piece and a general audition video. Good luck!