It wouldn’t be an inauguration without Beyoncé. Destiny’s Child’s most famous alumna performed Etta James’ enduring “At Last” during the 2009 Inaugural Ball, and Beyoncé has been a close and vocal supporter of the President ever since. In addition to endorsing Obama on her website, she’s also written an open letter praising Michelle Obama, with whom she collaborated on Let’s Move!, the First Lady’s anti-childhood obesity campaign. Obama is also the 44th President of the United States, and if there’s anything we know about Beyoncé, it’s that she’s obsessed with the number four. She’ll be singing the national anthem, which she previously sang at the 2004 Super Bowl. What a way she’s come since then: Knowles is headlining this year’s Super Bowl halftime show next month.