咩樂器最難學???

all instruments are difficult to learn - ones that doesn't have a correct fingerboard such as violin / cello/ viola starts difficult and gets easier in a high level. piano, guitar drums starts easy but gets harder at a higher level

我覺得是一些沒有音準的樂器,例如: 小提琴,豎琴...等.弦樂器!!
因為其他樂器只要勤多練習,一定可以練到.
但如果是一些沒有音準的樂器,因為一開始的音就按錯或彈錯,但自己又聽不出的話,就算練得很熟都沒有用.

You just need to use your heart to learn every thing is so easy!^_^!!