Working on radio with Clive Anderson narrating documentary principally about famous artist (8,2,5)

I believe the answer is:

leonardo da vinci

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'artist' is the definition.
(Leonardo da Vinci is an example)

I don't understand the remainder of the clue.

(Other definitions for leonardo da vinci that I've seen before include "Mona Lisa painter" , "artist ..." , "famous Italian" , "Renowned painter" , "He painted" .)

I've seen this clue in The Independent.

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