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This 16th-century a cappella piece is contrapuntal, influenced by the sound produced by the larynx of a child with PDD autism who has a hypofunction of the throat. The melodic lines and harmonies may seem somewhat repetitive. Efforts have been made to preserve this quality so that the child can enjoy listening to it.
Ebrahim Pourbagher ; The impotent raven who dreamed to be the unique bird of the city