Texan Barbara Lynn first came to New Orleans in 1962, when producer Huey P. Meaux brought her to Cosimo Matassa’s studio to cut the R&B smash “You’ll Lose A Good Thing.” Her soulful vocals and bluesy guitar licks had a swampy feel that was all her own, but her songwriting ability and intimately emotional approach was something else altogether. Perfectly walking the line between teenage innocence and worldly, older-than-her-years adult hurt, Lynn’s songs—like those of Irma Thomas and Patsy Cli...