The musicians are sharp - it's terrible (8)

I believe the answer is:

harpists

'the musicians' is the definition.
(harpist is a kind of musician)

'sharp it's terrible' is the wordplay.
'terrible' indicates anagramming the letters.
'sharp'+'its'='sharpits'
'sharpits' with letters rearranged gives 'HARPISTS'.

'are' is the link.

I've seen this clue in the Evening Standard.

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