It was a lot of fun just to listen, the lone one closest to me never barked just howled....the other group was immediately vocal and sort of sounded like when mom is getting the pups together...i listened to that a few times during the end of summer but it wasn't exactly the same , the group answered together and seperately a couple times..What i thought was incredible was the immediate response, they sounded like they were responding before the first one was even done...I know one thing,2 people told me about this and they were right, they had heard them in there before, going to be there friday...