While it would be tough to beat the depth of Aretha Franklin’s vocal profundity, her sister Erma scores for the oceanic breadth so few other soul artists of her time were capable of. The late Erma, Aretha’s oldest sister (Carolyn was no slouch, either), is best known for the original and definitive version (sorry Janis, though I love yours, too) of “Another Piece of My Heart”. To deny her further attention would not give justice to this versatile vocalist, who was capable of laying down pure mid-'60s soul music, harder-edged funk, as well as a surprisingly sweet sophistication that both Ettas (James and Jones) also shared. This collection takes a broad survey of a singer who, overshadowed by her insuperable sibling, could not keep the momentum of her one great hit, despite a rich career of excellent vocal performances.