NEW YORK - Britney Spears has slammed detractors who accuse her of lip-synching at her concerts.
Answering questions on an Israeli TV show ahead of her concert there, she said: "A lot of people think that I don't do live. Because I'm dancing so much - I do have a little bit of playback but there's a mixture of my voice and the playback.
"It really p***es me off because I am busting my ass out there and singing at the same time and nobody ever really gives me credit for it."
Her manager had also said in 2014: "To put on the show that she puts on, it's virtually impossible to sing the entire time and do what she does.
"She's singing on every song, basically, when she has the ability to sing. There's no way you can dance for 90 minutes straight and sing the entire time."