The most common and most likely answer to this crossword clue is the 3 plus 7 letter word COR ANGLAIS
I've seen this crossword clue in The Guardian
C
O
R
A
N
G
L
A
I
S
More clues leading to the result COR ANGLAIS
- Something to blow about, primate’s handling large fine
- Crashing a car and losing horn?
- It’s instrumental in coral gas production
- Instrument in amazing article on processed signal
- Instrument sounded note, one essential to function
- Orchestra member rarely is after a drink
- Carol sang and I played an instrument
- Company called City is producer of windy flats etc
- Sing a carol, playing an instrument
- It’s instrumental in calor gas distribution
Buddy explains!
The straight part
We know that "Instrument" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case instrument = cor anglais.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.