Reaching crescendo without middle C, like Four Seasons' variations (8)
I believe the answer is:
climatic
'reaching crescendo' is the definition.
Although both the answer and definition are adjectives, I don't see how they can define each other.
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for climatic that I've seen before include "Relating to the weather" , "of prevailing conditions" , "Like the weather" .)