The most common and most likely answer to this crossword clue is the 13 letter word ORCHESTRATION
I've seen this crossword clue in The Daily Telegraph
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More clues leading to the result ORCHESTRATION
- Terrible chore initially required in base — 15’s job?
- Other ranks box with allowance for scoring
- Scores talk about doctor's last case
- Men helping to defend box and scoring
- Process of arranging gold treasury share
- Musical arrangement as an alternative to box allocation?
- Arrangement as an alternative Treasury budget
- Box clever finally in speech, making arrangement
- Arrangement for lecture about royal box
- Arrangement for lecture about royal casket
Buddy explains!

The straight part
We know that "arrangement" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case arrangement = orchestration.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 ORCHESTRATION mean?
ORCHESTRATION noun- The arrangement of music for performance by an orchestra.
- A composition that has been orchestrated.
- (by extension) The control of diverse elements.
- (by extension) The automated arrangement, coordination, and management of computer systems, middleware, and services.