Judges listen and take recorded notes while the performance ensemble "Impulse" from Dubuque Walhert perform their song and dance routine during Saturday's Jefferson Show Choir Invitational in Cedar Rapids. The competition is in its 28th year, and is the Jefferson program's largest fundraiser. The competition is in its 28th year, and is the Jefferson program's largest fundraiser. The competition is in its 28th year, and is the Jefferson program's largest fundraiser.