Today, everyone was watching as a superstar performer at the center of a big controversy finally broke her silence. We're talking abbeyon say, and "the star spangled banner." For anyone who doubted... See More
Today, everyone was watching as a superstar performer at the center of a big controversy finally broke her silence. We're talking abbeyon say, and "the star spangled banner." For anyone who doubted could sing it, she sang it, all alone. Here's abc's paula faris. Reporter: She walked to the front of the stage and faced the music with music. ♪ O say can you see ♪ Reporter: Beyonce, belting out the national anthem acapella at her super bowl press conference today. No pre-recorded tracks. ♪ What so proud ly we hailed ♪ ♪ at the twilight's last gleaming ♪ Reporter: She now admits she did sing over pre-recorded tracks at the presidential inauguration, sparking controversy. Beyonce-gate. The crisis in lipia. Reporter: For ten days she's been silent. Today, she came clean. Any questions? Reporter: Immediately setting the record straight. Due to the weather, due to the delay, due to no proper sound check, I did not feel comfortable taking a risk. I decided to sing along with my pre-recorded track. Reporter: In fact, beyonce says it was always the plan to sing with a pre-recorded track. The inauguration was, unfortunately, a time where i could not rehearse with the orchestra, actually because i was practicing for the super bowl. So, it was always the plan. Reporter: No response from the white house, but democratic strategist donna brazile tweeting, "beyonce has come clean and told the truth. God bless america." Hip hop icon russell simons simply tweets, "beyonce killed it." She's been preparing for the super bowl for five months and today, she made this promise. I will absolutely be singing live. I am well rehearsed. And I will absolutely be singing live. This is what I was born to do. Reporter: Diane, the super bowl typically the most watched television event of the year. 100 million people expected to tune in. That's four times more than watched the inauguration, so, you're talking about a big stage for beyonce. That was a nervy performance today. Reporter: It was. It was something else. Thank you so much, paula.
This transcript has been automatically generated and may not be 100% accurate.