In a soundtrack, you are in a way always relating with... a combination of different languages. It has to have the same path and same rhythm. Sometimes it's a polyphony of languages that have to work together in some way. With musical projects alone, you can be more free.
You don't have to compose a masterpiece every time, but I think the challenge of art is always searching for something different, searching for a new sensitivity, a new perspective, a new vision.
The spirituality of the music is something that I always search for in what I do, because I think that music has to have everything inside: a strong architecture, a support, the emotion.