Third muso playing at Murrumbidgee town prance (6)
I believe the answer is:
sashay
'town prance' is the definition.
'sashay' can be an answer for 'prance' (I've seen this in another clue). I am unsure of the 'town' bit.
'third muso playing at murrumbidgee' is the wordplay.
'third muso' becomes 's' (yrd letter of 'muso').
'playing' becomes 'as' (I've seen this in other clues).
'at' is a charade indicator (letters next to each other).
'murrumbidgee' becomes 'hay' (I am not sure about this - if you are sure you should believe this answer much more).
's'+'as'+'hay'='SASHAY'
Can you help me to learn more?
(Other definitions for sashay that I've seen before include "Walk exaggeratedly" , "move with flamboyance" , "Walk with exaggerated hip and shoulder movements" , "parade" , "move smoothly" .)