Anyone who saw Paul McCartney perform this summer saw in the audience moms, their kids, and their children's children – all singing along. [cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2009/images/08/12/beatles.gi.art.jpg caption="Picture taken 18 August 1964 of the British pop music group 'Beatles' leaving the London airport for a tour in United-States."] It's no surprise that a new survey found … Continue reading Battle of the bands