thank you for your answer! i don t know if 8th grade in portugal is the same in other countries but it is the latest grade before college... anyway these studies can be difficult for me even if the grades are the same... i dont know! i play several chopin etudes (op 10 nos 9,12 and op. 25 nos 1,2,7,12) and i would like to play a liszt etude but perhaps it is too difficult in this moment... i ´ll ask my teacher! anyway thanks