The most common and most likely answer to this crossword clue is the 3 plus 3 letter word THE WHO
I've seen this crossword clue in The Guardian
T
H
E
W
H
O
More clues leading to the result THE WHO
- Band still in fashion? On the contrary
- Yet to embrace fashion, performers at 10 25
- Rock group might laugh
- Moral quality associated with house group
- Band originally white hot, no longer ‘with it’
- Cut in if they’re still rocking!
- Article set out how to become famous rock group?
- Matthew Hoggard entertained by rock band? Just the opposite
- Sixties rockers fell into hot riffing
Buddy explains!

The straight part
We know that "performers at 10 25" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case performers at 10 25 = the who.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.