Mar 7, 2013 14:16 Beyonce live in the Big Easy Beyonce live in the Big Easy Advocate staff photo by JOHN McCUSKER -- Beyonce, who will appear at the Super Bowl halftime show, started a press conference Thursday by belting out an a capella version of the National Anthem., laying to rest any questions about whether she will sing live Sunday. BY DANNY MONTEVERDE| New Orleans bureau March 07, 2013 Comments New Orleans — Entertainment during Super Bowl XLVII will include a pregame performance that features the Sandy Hook Elementary School choir performing with Jennifer Hudson and a halftime show that will include a live performance from Beyonce. Those details were revealed Thursday during a press briefing that included an impromptu performance of the “Star-Spangled Banner” by Beyonce. The singer has faced questions recently about whether her performance of the national anthem during President Barack Obama’s inauguration was live or lip synced. She admitted Thursday that the voice track was pre-recorded. In an effort to kill questions about that performance that could have overshadowed her Super Bowl show, Beyonce began the news conference by asking those in the audience to stand, at which point she belted out an a capella version of the national anthem. “Any questions?” she asked when she was done, a play on beginning the news briefing and her performance ability. Calling herself a “perfectionist,” Beyonce said she didn’t have enough time to practice with the U.S. Marine Band before Obama’s inauguration, leading her to use the recording. “It was a live television show and a very, very important emotional show for me, one of my proudest moments,” Beyonce said. “It was about the president and the inauguration, and I wanted to make him and my country proud. So I decided to sing along with my pre-recorded track, which is very common in the music industry, and I’m very proud of my performance.” She said that won’t happen Sunday. “I will absolutely be singing live. I’m well-rehearsed, and I’ll absolutely be singing live. This is what I was born to do, and what I was born for,” Beyonce said. What she would not confirm or deny were rumors a Destiny’s Child reunion during the halftime show. “I can’t really give you any details. I’m sorry,” she told the hundreds of journalists in attendance. Hudson will join the Sandy Hook chorus before the Baltimore Ravens-San Francisco 49ers game to sing “America the Beautiful.” The Oscar-winning singer will join 26 students from the Newtown, Conn., school where 20 first-graders and six adults were killed during a rampage Dec. 14. Rhythm & blues singer Alicia Keys will perform the national anthem.