A songwriting team has sued Carrie Underwood, the NFL and NBC, saying they stole a song and "slightly modified" it to introduce "Sunday Night Football" to viewers last season.

The lawsuit in Manhattan federal court noted that Underwood's "Game On" even carried the same title as the song singer Heidi Merrill of Newport Beach, California, put on an internet music video two years ago.

The lawsuit sought unspecified damages.

Merrill pitched the song to Underwood's producer in August 2017 during a conference in Nashville, Tennessee, where Underwood lives, the lawsuit said.