Play It by Ear
(improve as one goes alone)Let' go to the movies, agreed?
Sure. And what'll we do after that?
Oh, I don't know. Let's play it by ear.
Well, I would like to have a more definite plan of action.
Don't be like that. It's always more fun not knowing what to expect and deciding what to do as we go along.
definite = はっきりした、正確な
* definite article = 定冠詞