From the Bee Gees and the Carpenters to First Aid Kit and Haim, the family band is a long-held musical tradition. And the sisters of Joseph — from America’s earthy folk capital of Portland, Ore. — are keeping the dream alive. Released last August, their sophomore album, I’m Alone, No You’re Not, continues and sharpens the trio’s emotional folk-pop mastery. Their intense harmonies blend in ways that are only possible from those who share the same DNA. Joseph headline a series of North American dates between runs with heavy hitters James Bay and Michael Kiwunaka. Catch them on Saturday, October 22, at the Higher Ground Showcase Lounge in South Burlington, with support from William Wild.