The most common and most likely answer to this crossword clue is the 10 letter word TREMOLANDI
T
R
E
M
O
L
A
N
D
I
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 TREMOLANDI mean?
TREMOLANDI noun- A tremolo section of a piece.