I am not a very advanced pianist; but as i'm advancing as a student, it's becoming more and more difficult for me to play piano. I have tendonitus in both hands because they are over used from drawing, piano, typing, etc. I'm only 15 years old, but my hands are done growing. I'm lucky if i can strech an octave and i was wanting some new, challenging music to play but i'm having a hard time finding anything that will fit my abilities. I'm currently in the last lesson book in Faber and Faber. Is there anything for me?