The most common and most likely answer to this crossword clue is the 8 letter word COSTELLO
I've seen this crossword clue in The Guardian
C
O
S
T
E
L
L
O
More clues leading to the result COSTELLO
- Songwriter and entertainer first off breaking instrument
- Sole clot messing about? He had a funny partner
- Rock singer’s surprised comment about Saint to have effect
- Elvis in huge theatre initially drowned by instrument
- Comic sot tripping over one of strings
- 23 to close tour after taking in Luxembourg?
- Singer Elvis coos weirdly about state
- Old comic companies reveal nothing
Buddy explains!

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.