<P> The length of time a composer has to write the score varies from project to project; depending on the post-production schedule, a composer may have as little as two weeks or as much as three months to write the score . In normal circumstances, the actual writing process usually lasts around six weeks from beginning to end . </P> <P> Maestro Ilaiyaraaja is known to have completed most of his film scores within a week including spotting, syncing, writing and recording . On many occasions he has scored for around 55 movies a year and has written scores for more than a 1000 films in various Indian languages, and one in English . </P> <P> The actual musical content of a film score is wholly dependent on the type of film being scored, and the emotions the director wishes the music to convey . A film score can encompass literally thousands of different combinations of instruments, ranging from full symphony orchestral ensembles to single solo instruments to rock bands to jazz combos, along with a multitude of ethnic and world music influences, soloists, vocalists, choirs and electronic textures . The style of the music being written also varies massively from project to project, and can be influenced by the time period in which the film is set, the geographic location of the film's action, and even the musical tastes of the characters . As part of their preparations for writing the score the composer will often research different musical techniques and genres as appropriate for that specific project; as such, it is not uncommon for established film composers to be proficient at writing music in dozens of different styles . </P> <P> Once the music has been written, it must then be arranged or orchestrated in order for the ensemble to be able to perform it . The nature and level of orchestration varies from project to project and composer to composer, but in its basic form the orchestrator's job is to take the single - line music written by the composer and "flesh it out" into instrument - specific sheet music for each member of the orchestra to perform . </P>

Which film director has not been credited as a music composer in films