Sibling relationships can be tricky.

— Tegan & Sara are about to hit the road for "The Con X: Tour," which marks the 10th anniversary of their breakout album.

— Abby Holtzman is a radio producer working now at WAMU and NPR's The Big Listen. Her brother Josh is in his first year at Oberlin College. They only look like twins.

Episode scoring by Jeremy Bloom with additional music by Andy Cohen ("A Perceptible Shift") and Juanitos ("Mondo Wack"). Theme by Alexander Overington.