Kara DioGuardi knows something about writing a hit song. She's a songwriter who has worked with Kelly Clarkson, Carrie Underwood, Christina Aguilera, and many others. DioGuardi was also a judge on American Idol for two seasons. She's visiting Rochester as a guest of the Institute for Popular Music at the University of Rochester, but stopped in to be a guest on Connections, along with John Covach, director for the Inistitute of for Popular Music at the U of R. She'll be offering a songwriting workshop and will be joining IPM's free "In Conversation series."