The golden era of American soul music in the 1960s and early 70s is synonymous with the classic soul sides produced by an array of legendary performers for Atlantic Records during that momentous musical time. And, beyond all the immortal soul and R&B hits and top charting singles the label released over the years, there are treasure-filled vaults of tapes storing countless more historic recordings by a host of remarkable talents. Compiled by soul music historian David Nathan, this new collection gathers rarities-many previously unreleased-unearthed from the venerable Atlantic Records archives featuring stellar soul sisters who are among the genre's all-time greatest.