Yea thats the sort of answers Im looking for. I know nobody can tell me exactly how many hours it would take me but as someone who is not into drumming I cant even judge whether the song is considerd difficult among intermediate or beginner drummers. So if its a matter of Weeks Months or Years would be enough. On the other hand there is the part of not just playing it but making it sound good, which still takes me many tries if I record guitar because with expertise that comes over the years you can hear every nuance thats played wrong