Crossword Genius

Make an effort on a tune (6)

Ross

I believe the answer is:

strain

I believe this clue is a double definition.

'make an effort' is the first definition.
(I've seen this before)

'tune' is the second definition.
(synonyms)

'on a' acts as a link.

(Other definitions for strain that I've seen before include "Filter - intense effort" , "line of ancestry" , "Pour through a sieve" , "Drain off" , "Family - tension" .)

I've seen this clue in The Mirror.
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