If I may suggest this one. I do not know if you like Leonard Cohen. This video is of a speech he gave in Spain and he talks about poetry. I loved what he said. The rest of the film is about how and where he got his music from.

He was (from what I've read) a difficult man, and yet, there is a kind of humbleness in the way he speaks and sings - as if it is the songs that matter, not him.