Cores e coros was commissioned by Edite Rocha and the Association Pro-Organo, Portugal.

The work was written specifically for the Iberian Organ, the single manual instrument, with its characteristic horizontal rank of pipes commonly found in local churches throughout Portugal.

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This single manual may be split into several sets of pipes, and the title, meaning “colors and choirs” is a reference to the constantly varying timbres that the material undergoes as it is heard moving through physical space (choirs of pipes) across the course of the piece.