Singer:
"The first X-Men: Apocalypse trailer was simply Oscar using his normal voice -- which is wonderful; his performance is fantastic -- but that was never the intention. We just needed those words to govern the first teaser. So people thought, 'Oh, wait, is that going to be his voice during the whole movie?' It's like, no, but to tell the story of the first teaser, we needed the voice, and I hadn't recreated the voice yet."
“What I'm doing is something very unique. It hasn't been done before. We're rerecording his entire performance because the suit's creaky and makes all kinds of noise, you can't really use any of it anyway. But I want his performance. So he's being recorded in ADR using a standard Sennheiser microphone, but also with a bass mic to his right cheek and a bass drum mic to his left cheek. These two microphones have the ability to pull vocal range out of his voice that the human ear cannot hear. And I can take that vocal range that I've now recorded, and I can pull it and use it to augment his voice -- and that with a little digital magic can create a voice that's both completely governed by his performance but is not natural."
“It ebbs and flows and moves through the movie, and changes, so he doesn't just have one single voice. He speaks with different voices depending on different moments in the film. So it's really kind of cool. It's the first time I've ever had the tools to sculpt a performance in post-production, that was already given to me on set and chosen in the cutting room."