Bill Skarsgard worked hard to create Count Orlok's deep voice in Nosferatu

Bill Skarsgard worked extensively to master the voice of Count Orlok in 'Nosferatu'.

The 34-year-old actor plays the vampire in the new horror film from director Robert Eggers and went to great lengths to create an extremely deep voice for his character.

Speaking at a Q+A with cast members in New York City recently, Bill said: "The voice was something that I knew he wanted it inhumanely deep, and I don't think my normal voice is very deep, so it was, 'OK, how can I access a depth that I didn't know I had in me?'

"That was a wonderful exploration and working with an opera singer trying to lower the voice as deep as possible and trying to be relaxed as possible as I could and I explored with it and I worked on it so much that I've built out this little routine for myself that I knew that, 'OK, my voice is great when I'm really relaxed.'

"So I used this 20-minute routine that I would do to be in the place where the voice was resonating and coming from me as opposed to feeling like I was putting on the voice."

Skarsgard admits that he didn't know how he would approach the role at first but ultimately became more comfortable as his undead alter ego.

He said: "It's a very abstract role to undertake, cause you're sitting in your hotel room or living room working on it, looking like yourself and trying to explore the voice and everything and you're losing your mind.

"You have to be crazy to do what we do, I think, but the pieces with the prosthetics and the costume, all of that makes it feel real when you're performing it."

Bill previously admitted that he was relieved to "let go of the chains" of Count Orlok once production had ended on 'Nosferatu', which also stars Nicholas Hoult and Lily-Rose Depp.

The 'It' actor told The Hollywood Reporter: "Wrapping the movie was a relief.

"Everything that he represents is so intense, I was happy to let go of the chains he had on me."

Skarsgard wasn't the only cast member to struggle with the demands of their part as Depp revealed that the role of Ellen Hutter - who is haunted by the vampire - was both "physically and emotionally" challenging.

The 25-year-old star said of her character: "The torment that she’s going through is the meat of the movie.

"The darkness she’s carried within her since she was younger is now coming to a head. She found a husband that has been able to anchor her to the world, the light, and then he goes away and leaves her vulnerable to the forces who want to claim her.

"But it’s not so simple as her [being] plagued by this horrible thing. There is a yearning there. A connection between Orlok and Ellen. She is the one that called out to him and, as he says in the movie, she must surrender herself."