Surely 'great orchestra ' should be accepted.
I agree !
"....plays with a big orchestra..." is quite standard where I come from.
"famous orchestra" should be accepted, given that it's one of the dictionary hints
Agreed. Duo often accepts "Famous" for grand/grande
Agree. "Big" is what one would say to a child.
The spelling of the proper name (Anna vs Ana) shouldn't make the whole translation wrong.
Duo disagrees with you.