Britney Spears encouraged by 'Tiger' chants

Britney Spears' choreographer screams "tiger" at her to make her work harder.

The 'Hold It Against Me' singer is again working with Brian Friedman on the promotional video to the single and the dance expert admits he has a special routine to make her perform her best.

He said: "I scream tiger. When I had her back in the studio, I was referring to how she danced when we were working together in the past, when we were doing 'I'm A Slave 4 U', 'Toxic,' some of those things.

"She used to have a prowl about her and an attack that to me was like a tiger, so I kept telling her, 'I want to see the tiger back.' I scream the word 'tiger,' so 'tiger' seems to work. It makes her laugh, so it works."

The 'Hold It Against Me' video is being directed by Jonas Akerlund and styled by his wife, B. -both of whom previously worked on Lady Gaga's 'Telephone' promo - but while this is the case, he insists there is a huge difference between the two artists' videos.

He added to MTV news: "The styling for this video is beyond what Britney has done before. B. did the styling for it, and I can say that it is not 'Britney does Gaga.' That is not what's happening with this.

"Gaga has her own niche, and although B. has worked with Gaga before, she's not giving Britney anything that Gaga would wear.

"I love seeing Britney try out new things. It's just an extension of what Britney already is."