Wearing a gold sequined dress, gold make up, hair blowing back behind her, Leona Lewis walks slowly down a hospital corridor.

The music is familiar, but they are not the words you would expect.

"I need the surgeon to/Keep deep freezing, deep, deep freezing blood/I'm need needing, need need needing my mum/I'm seep seeping, seep seep seeping blood..."

This is comedian Katy Brand in an old hospital in east London doing a spoof of Leona Lewis' Bleeding Love.

We went behind the scenes to the filming of the music video, being produced for her forthcoming show on ITV2.

Katy said: "It's called Heart Bypass Love which is meant to be a medically correct version.                       

The show will also feature a spoof track called Valium, by Amy Winehouse. But Katy says none of her send ups go too far.

The second series of Katy Brand's Big Ass Show will be on ITV2 later in the year with other characters including Kate Winslet in the community, Kate Moss and Jesus' girlfriend.

She's also going to be presenting some of Big Brother's Big Mouth.//BBc