I haven´t listened to the podcast yet, but have been thinking about the concept a lot. Even when relatives sing the same line without harmonies, it´s a great double track. And with harmonies, magical. Some of my favorites:
Let´s not leave out twins:
And any excuse to mention Mother Maybelle, June, Anita, Helen:
At UT Hootenanny! Did they ever play with Renfield?
