The most devastating thing Alela Diane sings on her new album — and there are many — goes like this: “I heard somebody say / That the brightest lights / Cast the biggest shadows / So honey, I’ve got to let you go.”

That comes from “About Farewell,” the title track of Diane’s new album, which addresses the heartache and renewal that trail a failed marriage. After a pair of records that amplified her aesthetic more along the lines of rustic country, her latest is a return to simpler forms, a testament to the power of an acoustic guitar backing an artist with something to say (and with a voice you’d expect from a saloon singer). Full story for BostonGlobe.com subscribers.

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