Carrie Underwood has sung the intro for NBC’s Sunday Night Football for 13 straight seasons, but she’s never revealed how the process actually works.

Sure, the network knows which matchups they’ll have at the start of the season. But midway through, games can “flex” into the primetime Sunday night slot if they’re more exciting than the originally scheduled matchup.

Then there’s playoff football, which can throw a wrench into everyone’s plans. Underwood is a busy woman, and filming takes time and resources. There’s no way she could go week to week with it … right?

Carrie Underwood Sunday Night Football History

The reality is simpler but so much more work. Talking to Highway Mornings with Cody Alan , Underwood broke down the process.

In 2013, Underwood followed Faith Hill as th

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