Exceptional band had very able performer (3,4)

I believe the answer is:

dab hand

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'very able performer' is the definition.
The definition suggests a singular noun which matches the answer.

'exceptional band had' is the wordplay.
'exceptional' is an anagram indicator.
'band'+'had'='bandhad'
'bandhad' is an anagram of 'DAB HAND'.

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(Other definitions for dab hand that I've seen before include "Barely wash" , "cursory wash?" , "Past master" , "An informal expert such as band had" .)

I've seen this clue in The Telegraph.

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