"America's Got Talent" is all about discovering stars — and sometimes those stars might be sitting right behind you.

It's a lesson judges Simon Cowell, Howie Mandel, Heidi Klum and Sofía Vergara learned on Tuesday's episode of the NBC reality competition,

which saw an 11-year-old girl clinch the coveted Golden Buzzer after catching the judges' attention while singing in the studio audience on a commercial break.

Before her seemingly impromptu performance, Madison Taylor Baez opened up about being a fan of "AGT" since she was 4.

"I am the biggest fan there could be of 'America's Got Talent,' and here I am," she said.

But instead of walking onto the stage and auditioning the old-fashioned way, Baez hid in the studio audience, blending in among the fans.

To pass the time during breaks, members of the "AGT" studio audience get the chance to sing into a mic.