Pieces of English duets performed (6)
I believe the answer is:
etudes
'pieces' is the definition.
(etude is a kind of piece)
'english duets performed' is the wordplay.
'english' becomes 'e' (abbreviation).
'performed' is an anagram indicator.
'duets' anagrammed gives 'tudes'.
'e'+'tudes'='ETUDES'
'of' acts as a link.
(Other definitions for etudes that I've seen before include "Musical compositions (French)" , "Sue Ted over short musical compositions" , "Short pieces for solo instruments to show talent" , "Set due in short musical compositions" , "Short compositions for solo instruments" .)