Being so might make performance of lute fun (7)
I believe the answer is:
tuneful
'being so might make performance' is the definition.
I can't tell whether this defines the answer.
'of lute fun' is the wordplay.
'of' indicates anagramming the letters (the answer comes from or 'of' the letters).
'lute'+'fun'='lutefun'
'lutefun' is an anagram of 'TUNEFUL'.
(Other definitions for tuneful that I've seen before include "Harmonious" , "Melodious" , "Euphonic" , "Euphonious" , "Melodic" .)