碧昂斯疑在奥巴马就职典礼中假唱在奥巴马就职典礼现场演唱美国国歌的碧昂丝昨日被指假唱。负责为整场演出伴奏的总统专属乐队发言人周二对媒体表示，在碧昂丝演出前他们接到紧急通知，称她要用之前预录好的版本。On Tuesday, a spokeswoman for the U.S. Marine Band told news outlets that Beyonc had lip-synced at President Barack Obamas inauguration.Theres no question Beyoncs rendition（译文，演奏） of the national anthem was a roaring success. The mystery: Was it live or lip-synced?On Tuesday, a spokeswoman for the U.S. Marine Band told news outlets that Beyonc had lip-synced at President Barack Obamas inauguration. Master Sgt. Kristin duBois said the band was notified at the last minute that Beyoncwould use a prerecorded voice track.But by late afternoon, the Marine Corps backed off that statement.Marine Corps spokesman Capt. Gregory Wolf said that because there was no opportunity for Beyonc to rehearse with the Marine Band, it was determined that a live performance by the band was ill-advised. Instead they used a prerecorded track for the bands portion of the song.Regarding Ms. Knowles-Carters vocal performance, Wolfs statement continued, no one in the Marine Band is in a position to assess whether it was live or pre-recorded.A representative for Beyonc did not respond to requests for comment.DuBois declined to answer further questions. Earlier in the day, she told The New York Times that the rest of the inaugural performance was live and they did not know why a recorded track was used for the national anthem.Its not because Beyonc cant sing. We all know Beyonc can sing. We all know the Marine Band can play, she said.Kelly Clarksons representative said she sang live to perform My Country, Tis of Thee.All inaugural music is prerecorded in case weather conditions or other circumstances interrupt the program.The use of a recording is typical in big events. In 2009, cellist Yo-Yo Ma was questioned about hand-syncing for Obamas first inauguration. Ma said instruments werent functioning properly in 19-degree weather.内容总结（1）碧昂斯疑在奥巴马就职典礼中假唱在奥巴马就职典礼现场演唱美国国歌的碧昂丝昨日被指假唱