There are a few online tests that give you a measure of your pitch perception ability (such as the jake mandell tone deaf test). I took the test and I scored a 67% in my first attempt and 77% in my second attempt.
These are not great results and some of my friends with no musical training have scored above 80% easily. I assume this means that I have relatively bad pitch perception ability or memory.
I have two questions.
Is the pitch perception ability a necessity to compose music?
When I play the piano, I can easily put into notes what I hear in my mind. Then why is a scientific test telling me otherwise?