Known for stirring harmonies and socially conscious lyrics, iconic folk rock duo Indigo Girls are the subject of this intimate and insightful documentary, which tracks their decades-long car... Read allKnown for stirring harmonies and socially conscious lyrics, iconic folk rock duo Indigo Girls are the subject of this intimate and insightful documentary, which tracks their decades-long career.Known for stirring harmonies and socially conscious lyrics, iconic folk rock duo Indigo Girls are the subject of this intimate and insightful documentary, which tracks their decades-long career.