There's an enormous buzz surrounding Rob Marshall and Stephen Sondheim's stage to film musical 'Into The Woods' with it's spectacular ensemble cast and vibrant setting, but even a super A lister like Johnny Depp couldn't help but feel a little nervous.

Johnny Depp in 'Into The Woods'
Johnny Depp is the wiley Wolf in 'Into The Woods'

Being surrounded by award-winning movie stars like Meryl Streep, Emily Blunt and Anna Kendrick is scary enough without the prospect of singing in front of them. While you'd think Johnny Depp would be used to it, having starred in Stephen Sondheim's Oscar winning film adaptation of 'Sweeney Todd' back in 2007 and appeared in a number of Hollywood blockbusters with the likes of Morgan Freeman, Helena Bonham Carter, Angelina Jolie, Christian Bale and John Malkovich. However, he admits he found his role as the Wolf 'daunting' even if it was a 'joy' to be involved. 'It's one of those moments that you realise you will never in your life have an opportunity like that again, as an actor or as a musician', he confesses, in the run-up to the film's release.

Watch the trailer for 'Into The Woods' here:

Johnny Depp's mysterious and furry character is the very one that tries to lead Red Riding Hood astray after gobbling up her grandmother in the movie, which joins the likes of 'Cinderella', 'Rapunzel' and 'Jack and the Beanstalk' in the stories amalgamated to create 'Into The Woods'. While it was originally shown as a Broadway musical with a script by James Lapine, director Rob Marshall's spectacular adaptation has fans and critics eagerly awaiting the big screen release. 

More: Could 'Into The Woods' be in line for an Oscar?

'The choices that Rob makes and the films that he does, he's very true to his vision of the author's work', Depp insists of his work. 'His approach is very pure and he's out there to make something beautiful, affecting, artistic, emotional. He's the real thing.'

More: Johnny Depp is also set to star in 'Mortdecai'

'Into The Woods' is set for US release on Christmas Day.