According to this article, 27 year old Bee was ‘intimidated’ by Etta.

The pop star, who portrays the blues legend in forthcoming film Cadillac Records, performed her rendition of Etta’s famous hit At Last at Fashion Rocks in New York, as the 70-year-old looked on.

“Usually, I try not to make eye contact (with the audience) until I start singing,” Beyonce told Entertainment Weekly. “But I saw her. It was intimidating.”

Cute! She did so well in that Fashion Rocks performance too. Intimidation can help to make people work harder so maybe it helped.