Performance in carriage (3)
I believe the answer is:
gig
I believe this clue is a double definition.
'performance' is the first definition.
(I've seen this before)
'carriage' is the second definition.
(I know that Gig is a type of carriage)
'in' is the link.
(Other definitions for gig that I've seen before include "Small horse-drawn carriage" , "One-night stand" , "Band performance" , "A one-night musical performance" , "A palindromic single performance" .)