Cryptic crossword clue
Changes in volume, namely before coda in revised score 10

The most common and most likely answer to this crossword clue is the 10 letter word CRESCENDOS

I've seen this crossword clue in The Guardian
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Buddy explains!

The straight part
We know that "Changes in volume" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case changes in volume = crescendos.
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 CRESCENDOS mean?

CRESCENDOS noun
  1. An instruction to play gradually more loudly, denoted by a long, narrow angle with its apex on the left ( < ), by musicians called a hairpin.
  2. A gradual increase of anything, especially to a dramatic climax.
  3. The climax of a gradual increase.

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