Who is the sister of the writer and co-writer of the songs featured on the album Carpenters Perform Carpenter?
Carpenters Perform Carpenter:  The album features songs written or co-written by Richard Carpenter, hence the album's title. Richard Carpenter (musician): Richard Lynn Carpenter (born October 15, 1946) is an American pop musician, best known as one half of the sibling duo the Carpenters, along with his sister Karen Carpenter.
Karen Carpenter