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To Commission Music is to pay a composer to write a particular composition for a specific purpose or event. Anyone can commission music, and any type of music can be commissioned.
I believe the correct answer is: autobiographical.
Like many pieces in the nineteenth century the “Symphonie
fantastique: Épisode de la vie d'un artiste”, a program symphony written by the
French composer Hector Berlioz, is an autobiographical artwork as it
represented Berlioz’s unrequited love for actress Harriet Smithson.
