NASHVILLE (AP) - Carrie Underwood says she wanted to make sure she wasn't just doing "the same song with a different blondie up there singing it" for the NBC "Sunday Night Football" theme. Underwood says Faith Hill put her mark on "Waiting All Day for Sunday Night" for so many years, so she wanted to make it sound different when she redid it. The new version debuts with Sunday's game between the Cowboys and the Giants. In the meantime, Underwood is getting her lines down for her role as Maria in NBC's live holiday production of "The Sound of Music." Underwood says she's nervous about getting her lines down, but not the yodeling for "The Lonely Goatherd." She says she is one of "the blessed few" who know how to yodel.