Washington [US], August 28 (ANI): Singer Carrie Underwood, who won the fourth season of ‘American Idol’ back in 2005, is joining the ‘American Idol’ judging panel, replacing Katy Perry, reported Deadline. The country superstar won the singing competition in Season 4 and is returning as a judge beginning Season 25. “I feel like I’ve been so blessed to obviously be so rooted in country music, but I’ve been able to be a part of many other genres or music as well,” said Underwood . “I mean, I’ve got a song with Papa Roach right now. It’s a lot of fun.” She continued, “I like to think that I am ver…