Crossword Genius

King on guitar with pure playing inside bar (7)

Ross

I believe the answer is:

brewpub

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'bar' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'king on guitar with pure playing inside' is the wordplay.
'king on guitar' becomes 'bb' (I can't explain this - if you can you should give a lot more credence to this answer).
'with' becomes 'w' (abbreviation).
'playing' indicates an anagram.
'inside' is an insertion indicator.
'w'+'pure'='wpure'
'wpure' is an anagram of 'rewpu'.
'bb' going around 'rewpu' is 'BREWPUB'.

Can you help me to learn more?

(Other definitions for brewpub that I've seen before include "Licensed premises where ale is made and sold" , "specialist hostelry" , "Self-sufficient local" , "Real ale maker and retailer" .)

I've seen this clue in The Independent.
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