The most common and most likely answer to this crossword clue is the 10 letter word RHAPSODIES
I've seen this crossword clue in The Daily Telegraph
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Buddy explains!
The straight part
We know that "Classical poetry" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case classical poetry = rhapsodies.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 RHAPSODIES mean?
RHAPSODIES noun- An ancient Greek epic poem (or part of one) suitable for uninterrupted recitation.
- A random collection or medley; a miscellany or confused string of stories, words etc.
- An exalted or exaggeratedly enthusiastic expression of feeling in speech or writing.
- An instrumental composition of irregular form often incorporating improvisation.