Instruct theatre audience: there may be a gig here (5,5)

I believe the answer is:

coach house

'there may be a gig here' is the definition.
(gig is a type of coach)

'instruct theatre audience' is the wordplay.
'instruct' becomes 'coach' (coaching is a kind of instructing).
'theatre audience' becomes 'house' (term for a theatre's audience).
'coach'+'house'='COACH-HOUSE'

(Another definition for coach house that I've seen is " Building formerly housing carriages".)

I've seen this clue in The Times.

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