Covent Garden productions (6)
I believe the answer is:
operas
'covent garden productions' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for operas that I've seen before include "La Traviata, Aida" , "Dramatic musicals in which words are sung" , "These shows are a poser, oddly" , "Musical performances" , "Musical shows of Pesaro" .)