Singer dispersed brawl with hesitation (7)
I believe the answer is:
warbler
'singer' is the definition.
(I know that warbler is a type of singer)
'dispersed brawl with hesitation' is the wordplay.
'dispersed' indicates anagramming the letters.
'with' means one lot of letters go next to another.
'hesitation' becomes 'er' (sound used when hesitating).
'brawl' with letters rearranged gives 'warbl'.
'warbl'+'er'='WARBLER'
(Other definitions for warbler that I've seen before include "18's [BIRD]" , "songster" , "XWD SETTER" , "A small songbird or similar singer" .)