Symphonie Fantastique: Épisode de la vie d'un Artiste...en cinq parties (Fantastic Symphony: An Episode in the Life of an Artist, in Five Parts), Op. 14, is a program symphony written by Hector Berlioz in 1830. One of the most representative pieces of the early Romantic period, it is still very popular with concert audiences worldwide. The first performance took place at the Paris Conservatoire in December 1830. The work was repeatedly revised between 1831 and 1845 and subsequently became a favourite in Paris.