Crossword Genius

The Telegraph, say -- not alluring in part of Wales (5)

Ross

I believe the answer is:

organ

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

'part of wales' is the definition.
'organ' can be an answer for 'part' (organ is a kind of part). I'm unsure of the 'of wales' bit.

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for organ that I've seen before include "Stopped instrument" , "notes issue from this" , "Church keyboard instrument" , "With prompt enthusiasm" , "Church instrument - heart, perhaps" .)

I've seen this clue in The Telegraph.
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