Old Master vs producer

Old Master

noun
  • Any of various early European painters whose works are regarded as superlative. 

  • A painting by an Old Master. 

producer

noun
  • One who produces an artistic production, such as an album, a theater production, a film, a TV program, a video game, and so on. 

  • An individual or organization that creates goods and services. 

  • An organism that produces complex organic compounds from simple molecules and an external source of energy. 

  • An arrest for speeding after which the driver is allowed seven days (or ten, in the Republic of Ireland) in which to produce his/her driving licence and related documents at a police station. 

How often have the words Old Master and producer occurred in a corpus of books? (source: Google Ngram Viewer )