Jessie J

Jessie J

'The Voice' coaches often found themselves confused by contestants' gender in the show's blind auditions.

Mentors Jessie J, Sir Tom Jones, and Danny O'Donoghue are forced to listen to aspiring singers perform on the BBC One talent contest without actually being able to see them, which often resulted in a number of "hairy moments".

Danny told BANG Showbiz: "It is sometimes shocking when you turn around; the voice often comes in various different shapes and sizes. I ask everyone to watch the show and close their eyes and do the same thing.

"Sometimes it sounds like a 16-year-old girl who could do with a bit of coaching and then you turn around and it's actually a 40-year-old man. You just never know so there are a few hairy moments!"

Meanwhile, Jessie admitted she turned down one teenage hopeful because she thought she was in her forties and didn't believe she'd be able to coach her.

She added: "It's crazy because sometimes you don't know if they're a boy or girl, tall or small. There was one girl who was an opera singer who was 17 and sounded like she was 45 which was why I didn't pick her because I didn't feel like I could coach her.

"She'd never even had a singing lesson but just started mimicking Katherine Jenkins!"

'The Voice' launches on BBC One on March 24.