the language of music

the language of music最近看到的一篇英文中,有几句没能译出来,1、A student of music needs as long and as arduous a training to become a performer as a medical student needs to become a doctor.2、 Pianists are spared this particular anxiety,for the notes are already there,waiting for them3、they have to aim at controlling these sound with fanatical but selfless authority4、This problem of getting clear texture is one that confronts student conductors