A Britten piece in a hackneyed arrangement (5)
I believe the answer is:
trite
'in a hackneyed arrangement' is the definition.
I can't tell whether this definition defines the answer.
'a britten piece' is the wordplay.
I cannot really see how this works, but
'piece' could be 'r' (abbreviation for Rook) and 'r' is found within the answer.
The remaining letters 'tite' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for trite that I've seen before include "Stock" , "Commonplace, hackneyed" , "Lyre string" , "Banal, commonplace" , "Overfamiliar through overuse" .)