I have passed the 9-rank exam for the piano这句话对不对

1.I've passed the exam of grade 9 piano.
2.I was examined in grade 9 Piano and passed in 2009.
3.I have passed the exam for the 9th grade of piano.（不建议采用）
4.I have got the certificate of Grade 9 Piano.
5.I have passed my grade 9 piano exam.
关于3：既然都知道是九级钢琴又何必罗罗嗦嗦的说exam for the 9th grade of piano/exam for grade 9 Piano呢,直接了当grade 9 piano exam/grade 9 piano就好了.

你这句话的意思翻译过来是：我已经通过了考试,9-rank(钢琴伴奏版)
你的意思是不是：我已经通过了钢琴九级考试，
正确翻译应该是这个：
I've passed the piano level 9 test

rank 9. 乐器前面不加冠词