leann aguilera got the details. >> we are so excited for katy perry.as just named a new judge of "american idol." >> i told her about it. on the day we shot the carpool, she had to make up her mind that day. she said what do you think i should do? we talked it all out in the car, and she also talked about a lot of other things that she's never really talked about publically before. >> reporter: a fan instagramed katy performing dark horse with cordon. sure looks like their carpool karaoke went smoother than katy's awkward moment on ellen this week. >> do i have to answer. again. >> you're not married. >> i was when i was 25. it's been a long time, honey. >> to who? >> no wrinkles, no lies. russell -- >> you gave me some wedding gifts on this show. >> i do. i do. >> cool, cool, cool, cool, cool. >> kay is out performing her upcoming tour and album, and guess who else has new music? kelly clarkson. she joined "idol's" rival, the voice in the super inc. where, she shares about her album. the mother of two says her kids are a major influence, and she told