Jessica Hernandez has been waiting for years to release her debut LP, "Secret Evil," which premieres in its entirety today on Speakeasy.

The Detroit singer and her band, the Deltas, recorded the album in 2012 for Blue Note Records, but the deal fell apart and her songs were left in limbo until the label set her free last year. The smaller indie label Instant Records swooped in, and it's easy to hear why: Hernandez has a powerful, riveting voice and she's a versatile writer. She dials in snaky R&B songs on opener...