A lot of times I had footage that didn't have sound [in the Dream of Life film] - either I didn't bring a sound recorder, or I forgot to turn on the sound recorder - so we would have to improvise and build those scenes.

She let me in during her tour, in London. Her band members - especially Lenny Kaye - were shocked at the fact that I was filming Patti [Smith].

We had a hodgepodge of footage. We didn't film [in Dream of Life ]all the time - we would just film periodically, so nothing was synced and nothing was slated.

I never went to film school, so I just sort of learned on my own.

Patti [Smith] was my experiment, to be honest. And the film is what we got out of it. At the end of the day, I learned a lot about how to make a film.

We were just hanging out and getting to learn about each other. But I think trust was a really big thing. Patti [Smith] is a good friend, somebody I can talk to.

It took 12 years to put this film [Dream of Life] together, but it was not until toward the end of those 12 years that I looked at Patti [Smith] and said, "Maybe we should do something with this footage."