In this category, performance shows impressive style (5,3)
I believe the answer is:
class act
'impressive style' is the definition.
I know nothing about this answer so I can't judge whether this works.
'in this category performance' is the wordplay.
I cannot quite understand how this works, but
'category' could be 'class' (synonyms) and 'class' is found in the answer.
'performance' could be 'act' (act is a kind of performance) and 'act' is present in the answer.
No letters remain.
This explanation may well be incorrect...
'shows' acts as a link.
Can you help me to learn more?
(Other definitions for class act that I've seen before include "Outstanding performer" , "great performance" , "excellent performer?" , "High-quality performance" , "Impressive performer" .)