Crossword Genius

One adjusting the piano (by radio?) (5)

Ross

I believe the answer is:

tuner

I'm a little stuck... Click here to teach me more about this clue!

'radio?' is the definition.
(synonyms)

'one adjusting the piano' is the wordplay.
I cannot really see how this works, but
'one' could be 'un' (I've seen this in other clues) and 'un' is located in the answer.
This may be the basis of clue (or it may be nonsense).

'by' acts as a link.

Can you help me to learn more?

(Other definitions for tuner that I've seen before include "piano man?" , "Piano adjuster" , "Radio receiver" , "Motor specialist" , "Radio adjuster" .)

I've seen this clue in the Evening Standard.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.