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Ruby Blue was the debut solo album by Irish singer-songwriter Róisín Murphy. Released in 2005, it showcased Murphy's eclectic musical style, blending elements of electronic, pop, and soul. The album was critically acclaimed for its innovative sound and Murphy's powerful vocals, and spawned several hit singles, including "Sing It Back" and "Sow into You." Ruby Blue established Murphy as a solo artist and laid the foundation for her successful career.