The most common and most likely answer to this crossword clue is the 4 plus 3 letter word OPEN AIR
I've seen this crossword clue in Financial Times
O
P
E
N
A
I
R
More clues leading to the result OPEN AIR
- Old couple embracing in French outdoors
- Outdoor work — drop of early rain affected
- After Ring compose tune in unenclosed space
- Oscar to compose tune outside
- Outside broadcast on golf tournament
- New opera in a natural setting
- Broadcast opera in outdoor setting
- Lovebird’s to display outdoors
- Plea to songwriter? Heavens above!
- Ordinary enclosure, dry out of doors
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.
What does OPEN AIR mean?
OPEN AIR adjective- Taking place outdoors; alfresco