Crossword Genius

Makes the engine note musical? (5)

Ross

I believe the answer is:

tunes

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'makes' is the definition.
The definition and answer can be both related to change as well as being verbs in their -s form.
Perhaps they are linked in a way I don't understand?

I can't explain the rest of the clue.

Can you help me to learn more?

(Another definition for tunes that I've seen is " Airs, melodies".)

I've seen this clue in the Evening Standard.
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