"Oh What a Circus” musical (5)
I believe the answer is:
evita
'oh what a circus musical' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for evita that I've seen before include "Nineteen Dn musical" , "1978 Lloyd Webber musical" , "Stage musical" , "Peron musical" , "Juan Peron's wife" .)