Learn how to say Orchestration correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word orchestrate:
1arrange or score (music) for orchestral performance:
the song cycle was stunningly arranged and orchestrated
2plan or coordinate the elements of (a situation) to produce a desired effect, especially surreptitiously:
the situation has been orchestrated by a tiny minority
late 19th century: from orchestra, perhaps suggested by French orchestrer