Crossword Genius

Snap captures an island in it - rather good at showing off keys? (9)

Ross

I believe the answer is:

pianistic

'rather good at showing off keys?' is the definition.

'snap captures an island in it' is the wordplay.
'snap' becomes 'pic'.
'captures' indicates putting letters inside.
'island' becomes 'is'.
'in' indicates putting letters inside.
'an'+'is'='anis'
'anis' put inside 'it' is 'ianist'.
'pic' going around 'ianist' is 'PIANISTIC'.

I've seen this clue in The Independent.
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