You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "who wrote the theme music to perry mason?" whose answer is Frederick Steiner.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who wrote the theme music to perry mason
Useful Output:

Doc 1: The moody, era-appropriate, jazzy music that plays throughout Perry Mason is all by composer Terence Blanchard. Blanchard is best known as a
Doc 2: Ozzy's guitarist Zakk Wylde and keyboard player John Sinclair wrote the music. In a Songfacts interview with Wylde, he explained how it came
Doc 3: It was Fred Steiner, who died at age 88, at his home in the town of Ajijic in the Mexican state of Jalisco. but let's not overlook, Jerry Goldsmith.
Doc 4: Fred Steiner, who wrote the theme music for 'Perry Mason', also wrote the theme for which cartoon? D. The Rocky and Bullwinkle Show.
Doc 5: End Credits Chapter 8, written by: Frederick Steiner and performed  Perry Mason Official Soundtrack | Perry Mason Theme & Cues - Terence