Radio melody maker! (5)

I believe the answer is:

tuner

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'radio' is the definition.
(I know that radio can be written as tuner)

'melody maker' is the wordplay.
'melody' becomes 'tune' (synonyms).
'maker' becomes 'r' (I am not sure about this - if you are sure you should believe this answer much more).
'tune'+'r'='TUNER'

Can you help me to learn more?

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

I've seen this clue in the Evening Standard.

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