Each Sunday, Pitchfork takes an in-depth look at a significant album from the past, and any record not in our archives is eligible. Today, we look back at a trenchant and heartfelt 1975 classic by two ...

Singer-songwriters popped up from all quadrants of the US in the 70s. Kate and Anna McGarrigle stood out because they were a sister act who could each write and sing to an extent that, on their own, ...