Scottish music pub choir, non-U, performed? (7)
I believe the answer is:
pibroch
'scottish music' is the definition.
(type of bagpipe music)
'pub choir non-u performed?' is the wordplay.
'non' indicates named letters should be taken away.
'performed?' indicates an anagram (I've seen 'performing' mean this).
'pub'+'choir'='pubchoir'
'pubchoir' with 'u' taken away is 'pbchoir'.
'pbchoir' is an anagram of 'PIBROCH'.
(Other definitions for pibroch that I've seen before include "Form of bagpipe music" , "Tune" , "Genre of bagpipe music" , "piece of pipe music" , "What's played in bagpipes recital" .)