Composing an orchestral piece, the composer represents him in all the richness of diverse voices. But records, usually music first twostroke in the form of so-called clavier, only in some cases marking about one or the other notes it plays trombone; this - oboe; here come the violin.
Not randomly assigns the author of certain episodes of his music one or other tools. Not all the same, what instrument is playing the melody, the accompaniment to her, some supporting or long sustained chords... is it Possible, say, to charge heavy and clumsy tuba fast passages? A gentle poetic melody - the bassoon in the low register? Of course, this "role" better cope violin, flute or oboe. But tuba is necessary in order to create the bass sound support, and a few trombones brilliantly performed solemn chords.
The composer always accurately takes into account the character of the sound, especially the timbre of the sound and force of different tools. After the music finished, the composer creates orchestral score, which writes parties of all instruments. The process of creating orchestral scores and is called by the instrumentation. Sometimes the composer at once, without preliminary sketches, writes the score.
The instrumentation is very important expressive means of music, which is deeply different for each composer. N. A. Rimsky-Korsakov has defined it as "one of the parties to the soul of the composition. He was one of the consummate masters of the instrumentation. All the orchestral works of Rimsky-Korsakov, along with richness, characterized by brilliant brilliance, elegance and brilliance. Sometimes the word instrumentation replace another orchestration. But it has a slightly different shade. More often it is used when talking about the arrangement for orchestra works written for any instrument or other instruments. So, often performed in concerts of orchestral arrangements of Hungarian rhapsodies of Liszt. But the composer wrote it for piano. There are orchestral arrangements of Pictures at an exhibition by Mussorgsky, Balakirev piano Fantasia "Islamey" and many other works.
The term "instrumentation" has another meaning. The so-called academic discipline studied in the conservatories. Students of composers and musicologists - learn to instrument the music, explain the features of each tool, the laws of their combination. Show what the voices blend well, are combined with each other and which connect is not recommended. How to distribute between different tools sonority that all was well listened to some tools will not overpower the other.