The most common and most likely answer to this crossword clue is the 8 plus 5 letter word UILLEANN PIPES
U
I
L
L
E
A
N
N
P
I
P
E
S
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.