Steven Tyler: How bad was his national anthem rendition? Steven Tyler performs the national anthem prior to the AFC Championship Game between the New England Patriots and the Baltimore Ravens Jan. 22, 2012, in Foxboro, Mass. (CBS/AP) FOXBOROUGH, Mass. - How would his fellow "American Idol" judges rate Steven Tyler's rendition of the national anthem at the AFC championship game on Sunday? Let's just say, it probably wouldn't get him to Hollywood. A New England Patriots fan, the 63-year-old Aerosmith frontman warbled "The Star-Spangled Banner" before the New England Patriots played the Baltimore Ravens. He missed the high note and butchered some of the lyrics ("oh the land of the free"). Heckling began before his performance ended. On Twitter, it's being described with terms like screech and mangle. CBSNews.com's "American Idol" blogger, Chris Matyszczyk, described it like this: "It was that Steven Tyler had sung the national anthem at the AFC Championship game in a manner that might have frightened the Alien back into John Hurt's intestines." Some defended the performance, saying it was only what could be expected. "I knew 'the scream' was coming!," tweeted country singer Jason Michael Carroll. Judge for yourself in this video. A favorite in the region because of his local ties through Boston-based Aeronsmith, Tyler was cheered by the crowd anyway. He appeared with his trademark scarf, this one with the Patriots logo in red, white and blue sequins. And football fans haven't seen the last of Tyler: He and "Idol" alum Carrie Underwood are teaming up for a special "CMT Crossroads" the night before the Super Bowl. It will air Feb. 4 from "Live From the Pepsi Super Bowl Fan Jam."