On Monday’s episode of The Ellen DeGeneres Show, the actress stopped by to promote her new movie Mary Poppins Returns and took part in an impromptu singalong with the Backstreet Boys. It all started when Blunt confessed she still has a fear of singing in front of an audience. “I think it’s still not a natural thing for me,” shared Blunt. “I find it very nerve-wracking to sing in front of people.” Naturally, that made DeGeneres force her to confront her fears by asking her to take to the stage. Though Blunt gave an emphatic “no” in response, the host soon coerced her into it, telling the actress it was the audience’s one wish to see her perform.