Crossword Genius

Sing a bit of Schumann (3)

Ross

I believe the answer is:

hum

'sing' is the definition.
(I know that hum is a more specific form of the action sing)

'a bit of schumann' is the wordplay.
'a bit of' indicates a hidden word.
'HUM' is hidden within 'schumann'.

(Other definitions for hum that I've seen before include "Sing like a bee?" , "Unpleasant smell" , "Sound (of business?)" , "Sing with closed lips" , "Sound of busy activity" .)

I've seen this clue in the Evening Standard.
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