Originally when I went off to work on 'The Lord of The Rings' I got a call from my agent saying that I was just going to do a voice. But I couldn't really approach it like that. To get Gollum's voice I had to play the character.

When I played Gollum in 'Lord of the Rings,' if I was climbing up the side of a mountain, which I physically did, you know, I was on every single occasion swimming through streams, all of that, that wasn't captured. That was filmed on 35 millimeter, and for certain of those shots, it was rotoscoped and painted over.

I'm in the early stages of a film called 'Freezing Time' about Eadweard Muybridge, the Victorian photographer who was really the forefather of cinema. Digital animators still treat his images like the Bible. He was a very obsessed man.

The wonderful thing about 48 fps is the integration of live action and CG elements; that is something I learned from 'The Hobbit.' We are so used to 24 fps and the romance of celluloid but at 48 fps, you cannot deny the existence of these CG creations in the same time frame and space and environment as the live action.

But the first time I had to stand up and sing with them was when we did the pre-record for the movie and it was that moment where I sort of said to myself: "S**t, now I actually have to do this and I have to stand up and do my stars in your eyes moment!" Wake Up and Make Love With Me was the first song and I thought: "Here we are with Chaz and all the boys..."

Second films are, you know, like 'difficult second albums', so it's a tricky position to be in but I think he's made a highly accomplished film.

There is always that potential in the same way - Roddy McDowall ended up playing Cornelius to Caesar [in the Planet of the Apes]. Two different characters. That's the joy of the craft. Bring it on I say.