Instrumentation

Webster's Dictionary of the English Language

·noun The act of using or adapting as an instrument; a series or combination of instruments; means; agency.

II. Instrumentation ·noun The act or manner of playing upon musical instruments; performance; as, his instrumentation is perfect.

III. Instrumentation ·noun The arrangement of a musical composition for performance by a number of different instruments; orchestration; instrumental composition; composition for an orchestra or military band.