Knight with endless sound in fanfare (9)

I believe the answer is:

chevalier

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'knight' is the definition.
(I've seen this before)

I don't understand how the remainder of the clue works.

(Other definitions for chevalier that I've seen before include "Maurice ---, Fr. singer" , "young Charlie?" , "French actor and singer" , "noble rider?" , "Knight, gallant" .)

I've seen this clue in The Telegraph.

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