Like Urdu musical that's turned round mood (10)
I believe the answer is:
indicative
'mood' is the definition.
(indicative is a kind of mood)
'like urdu musical that's turned round' is the wordplay.
'like urdu' becomes 'indic' (Urdu is an Indic language).
'musical' becomes 'evita' (Andrew Lloyd Webber musical).
'that's turned round' says the letters should be written backwards.
'evita' back-to-front is 'ative'.
'indic'+'ative'='INDICATIVE'
(Other definitions for indicative that I've seen before include "Serving as a sign" , "mood" .)