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. Carrie Underwood Sunday Night Football HistoryThe reality is simpler but so much more work. In 2013, Underwood followed Faith Hill as the official voice of the Sunday Night Football intro. How Much Is Carrie Underwood Paid for Sunday Night Football? Carrie Underwood's Makeover Journey in 21 Pictures It turns out Carrie Underwood has been a brunette all along!