The Cowsills were the real-life 1960’s singing group that inspired “The Partridge Family,” a top recording group made up of a mother and her children, ages 8-19.  Their crystal harmonies and upbeat songs like “The Rain, the Park, and Other Things” and “Hair” were some of the most popular tunes of the era.

A new documentary tells their story of triumph and tragedy.  It premieres tonight on Showtime.