American artist and model Cassie just shared a new track that was written and produced by R&B diva extraordinaire Solange, and used on her personally-put-together compilation Saint Heron

Perfecting her style and maturing her music sensibility by the minute, Solange penned this classy chill-out track that goes perfectly with Cassie's naïve yet steady voice. [via Disco Naiveté]

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