Lad with good accent as performer (10)
I believe the answer is:
songstress
'performer' is the definition.
(songstress is a kind of performer)
'lad with good accent' is the wordplay.
'lad' becomes 'son'.
'with' is a charade indicator (letters next to each other).
'good' becomes 'g' (abbreviation).
'accent' becomes 'stress' (stress is a kind of accent).
'son'+'g'+'stress'='SONGSTRESS'
'as' acts as a link.
(Other definitions for songstress that I've seen before include "Soprano perhaps" , "Woman making up the numbers" , "coloratura perhaps" , "performer" , "Female singer" .)