lead sheet vs orchestration

lead sheet

noun
  • A form of written music that specifies the melody, lyrics, and harmony. 

orchestration

noun
  • The arrangement of music for performance by an orchestra. 

  • A composition that has been orchestrated. 

  • The automated arrangement, coordination, and management of computer systems, middleware, and services. 

  • The control of diverse elements. 

How often have the words lead sheet and orchestration occurred in a corpus of books? (source: Google Ngram Viewer )