Crossword Genius

Smooth tuneful composition ignores drums essentially (6)

Ross

I believe the answer is:

fluent

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'smooth' is the definition.
(synonyms)

I cannot understand how the rest of the clue works.

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(Other definitions for fluent that I've seen before include "Easily flowing" , "Using (language) easily" , "Good at speaking (a foreign language?)" , "Ready in speech" , "Spoken with facility" .)

I've seen this clue in The Hindu.
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