But it wasn't just a technical approach towards the piano, studying the music for this film was also a way of approaching the soul of the film, because the film is really about the soul of Schubert and the soul of Bach.

I don't think I'm that intellectual.

When you're an actress you are in a very specific position, cerebrally, I would think you know. You are a thinking person but you are in a certain perception of the world between really being conceptual and completely stupid. So you are in between, with a lot of intuition and instinct. And that's not completely being intellectual because I think intuition is more blurred. It comes from intuition. Instinct. More than really reasoning.

To be a great director, what does it mean exactly? It's not only about a great director, but also about being able to rely on the very special chemistry that goes between them. It not only has to be a great director, but the great director has to make his relationship to you, the actor, very special.

Sometimes you don't really understand the characters you do. I don't need to. Most of the behavior is obscure and I don't mind that. On the contrary, it's a fuel for me, to find out who the character is. As the spectator is finding out, I find out about the character myself.

But on the whole, nothing requires unbearable energy for me, it's just a normal thing.

What people think improvisation is and non-improvisation is, it's nothing to do with what you like or dislike. It's all about how it happens with certain directors and certain scenes. That's the way it works. It's not something, in general, that you can decide.