Carrie Underwood debuted her new Sunday Night Football theme song and fans are not happy about it. The 'Before He Cheats' singer has been performing NBC's Sunday Night Football theme since the year 2013 and just released her new song 'Game On' which will replace the song 'Oh, Sunday Night'. 

The new version of the theme song was played a week before the week 1 matchup between the Chicago Bears and Green Bay Packers. Carrie sings the new 'Game On' instead of 'Ohhhhh Sunday Night', which is a line that football fans have grown accustomed to and love. Carrie had co-written the song with Chris DeStefano and Brett James. 

The trio also co-wrote 'The Champion' with rapper Ludacris, and which was used during the Super Bowl Lll and the 2018 Winter Olympics coverage. Together along with Priscilla Renea, they wrote: 'Oh, Sunday Night'. 

Some people even called for the network and Underwood to bring back the older version. 

One of the viewers said the new song earned a "D+". Another fan commented saying, "I’m not a fan of this new Carrie Underwood song at all".

"I love Carrie Underwood with every fiber of my being but what is this new SNF song?" a user wrote. Another person said, "My ears are taking a knee in protest of Carrie Underwood SNF theme songs! This year's is the worse!!! #NFLSunday". 

Even with all the criticism, the song 'Game On' received some praise and some fans even called it a "fun new song". As reported by the RollingStone, Underwood took over the singing of the NFL theme song in the year 2013 from Faith Hill who used to sing the opener, 'Waiting All Day for Sunday Night.' 

Carrie is married to retired NHL player Mike Fisher. She is all set to release her new album 'Cry Pretty' scheduled on September 14, 2018.  Earlier on this year, Carrie had a bad fall while she was walking her dogs and had suffered from a broken wrist and had to get 50 stitches on her face. She is now almost back to her usual self after a painful recovery.